Openfoam flowratepatch. Contribute to OpenFOAM/OpenFOAM-4.
Openfoam flowratepatch User specifies: Total mass to inject Name of patch Injection duration Injection target concentration/carrier volume flow rate Properties: Initial parcel velocity given by local flow velocity Parcel diameters obtained by distribution model Velocity outlet boundary condition which corrects the extrapolated velocity to match the flow rate of the specified corresponding inlet patch. unv /*-------------- Detailed Description Velocity inlet boundary condition either correcting the extrapolated velocity or creating a uniform velocity field normal to the patch adjusted to match the specified flow rate. Also, most OpenFOAM solvers include a variable phi that represents the mass flux. 10 11 OpenFOAM is free software: you can redistribute it and/or modify it 12 under the terms of the GNU General Public License as published by 13 the Free Software Foundation, either version 3 of the License, or Properties Wrapper around the fixed condition Sets the velocity to a user-defined profile Usage The condition is specified in the field file for a volumetric flow rate using: <patchName> { type flowRateInletVelocity; volumetricFlowRate <Function1>; value <field value>; } Field file for a mass flow rate: <patchName> { type flowRateInletVelocity; massFlowRate <Function1>; value <field value Properties Wrapper around the fixed condition Sets the velocity to a user-defined profile Usage The condition is specified in the field file for a volumetric flow rate using: <patchName> { type flowRateInletVelocity; volumetricFlowRate <Function1>; value <field value>; } Field file for a mass flow rate: <patchName> { type flowRateInletVelocity; massFlowRate <Function1>; value <field value 17 18 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 19 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or swirlFlowRateInletVelocityFvPatchVectorField Class Reference | OpenFOAM | Free, open source CFD software, licensed under the GPL by The OpenFOAM Foundation Jul 11, 2023 · OpenFOAM v11 User Guide - 7. 5-dev, postprocessing mass flow « Previous Thread | Next Thread » Similar Threads Thread Thread Starter Forum Replies Last Post Match Pressure Inlet/Outlet Boundary Condition Mass Flow Rate MSchneid Fluent UDF and Scheme Programming 3 February 23, 2019 07:00 mass flow inlet and pressure outlet with target template<class CloudType> class Foam::PatchFlowRateInjection< CloudType > Patch injection, by using patch flow rate to determine concentration and velocity. 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT OpenFOAM Foundation patch version of OpenFOAM-4 . The flow rate is made proportional to the phase fraction alpha at each face of the patch and alpha is ensured to be bound between 0 and 1. More 13 14 OpenFOAM is free software: you can redistribute it and/or modify it 15 under the terms of the GNU General Public License as published by 16 the Free Software Foundation, either version 3 of the License, or 15 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 18 19 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 20 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or This boundary condition provides a volumetric- OR mass-flow normal vector boundary condition by its magnitude as an integral over its area with a swirl component determined by the angular speed, given in revolutions per minute (RPM) More 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT template<class CloudType> class Foam::PatchFlowRateInjection< CloudType > Patch injection, by using patch flow rate to determine concentration and velocity. Mar 7, 2023 · Hello! I was trying to create a polymesh from a Mesh_3d. For this I use the latest version v2012. 2; rhoOutlet 1. Velocity outlet boundary condition which corrects the extrapolated velocity to match the flow rate of the specified corresponding inlet patch. User specifies: Total mass to inject Name of patch Injection duration Injection target concentration/carrier volume flow rate Properties: Initial parcel velocity given by local flow velocity Parcel diameters obtained by distribution model matchedFlowRateOutletVelocityFvPatchVectorField Class Reference | OpenFOAM | Free, open source CFD software, licensed under the GPL by The OpenFOAM Foundation Jan 8, 2014 · template<class CloudType> class Foam::PatchFlowRateInjection< CloudType > Patch injection, by using patch flow rate to determine concentration and velocity. I can make a nice video Jul 9, 2024 · 7. Jul 8, 2025 · OpenFOAM v13 User Guide - 7. for incompressible solvers)), the flow rate is volumetric; where flux is mass flux (i. Usage 10 11 OpenFOAM is free software: you can redistribute it and/or modify it 12 under the terms of the GNU General Public License as published by 13 the Free Software Foundation, either version 3 of the License, or OpenFOAM 目前提供下面 3 种具体的后处理方式： • 每个求解器（如 simpleFoam）可以 通过设置来进行运行时处理； • 通过 postProcess 在运行结束进行后处理； • 通过每个求解器的 命令参数 -postProcess 来进行，在这种情况下，只执行后处理命令而不进行算例求解。 In OpenFOAM, these loops can be invoked implicitly. Example of the boundary condition specification for a volumetric flow rate: <patchName> { type flowRateOutletVelocity; volumetricFlowRate 0. g. x development by creating an account on GitHub. It works fine from the command line like: postProcess -func 'flowRatePatch (name=ex)' However Apr 19, 2016 · Hi All, I am trying to use the function object flowRatePatch to output the flow rate at inlet and outlet boundaries for a simpleFoam case. However, the value of phi at the patch produced by the OF is less than the Original value. OpenFOAM v2412 The open source CFD toolbox Public Member Functions | List of all members PatchFlowRateInjection< CloudType > Class Template Reference Lagrangian particle models » Submodels » Kinematic » Injection This graph shows which files directly or indirectly include this file: May 21, 2019 · Tags mass flow rate, openfoam 1. x / etc / caseDicts / postProcessing / flowRate / flowRatePatch Chris Greenshields Packaged function objects to plug into OpenFOAM cases ff63a1b · 10 years ago Jun 1, 2017 · OpenFOAM后处理flowRatePatch？ OpenFOAM 13 帖子 6 发布者 16. 7 Case management tools. Functionality can be executed by: conventional post-processing, a data processing activity that occurs after a simulation has run; run-time processing, data Sep 5, 2023 · OpenFOAM documentation - flowRateInletVelocityDescription 🔗 The flowRateInletVelocity is a velocity boundary condition that either corrects the extrapolated Jul 8, 2025 · 7. probes, graph plotting) visualisation, case control and run-time I/O. Unfortunately, the keywords have The aim of this section is calculation of flow through a specified patch. More Describes a volumetric/mass flow normal vector boundary condition by its magnitude as an integral over its area. e. 18 19 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 20 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 13 OpenFOAM is free software: you can redistribute it and/or modify it 14 under the terms of the GNU General Public License as published by 15 the Free Software Foundation, either version 3 of the License, or 10 11 OpenFOAM is free software: you can redistribute it and/or modify it 12 under the terms of the GNU General Public License as published by 13 the Free Software Foundation, either version 3 of the License, or. In my system, I implemented a codedFixedValue BC for inlet velocity, which enters into the space with some angle from the patch normal. I can successfully output volume flow rate through a specific patch (say outlet) per Patch injection, by using patch flow rate to determine concentration and velocity. Print help for this utility PatchFlowRateInjection< CloudType > Class Template Reference | OpenFOAM | Free, open source CFD software, licensed under the GPL by The OpenFOAM Foundation Apr 2, 2013 · All times are GMT -4. 3. The inlet mass flux is taken from the neighbour region. 0; value uniform (0 0 0); } The Jul 9, 2024 · OpenFOAM v12 User Guide - 7. For solvers where the flux is volumetric (i. Usage Sep 5, 2023 · OpenFOAM documentation - variableHeightFlowRateInletVelocityDescription 🔗 The variableHeightFlowRateInletVelocity is a boundary condition that provides a velocity 17 18 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 19 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or Jump to Notes Jump to HistoryActivities 15 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or Jul 22, 2020 · OpenFOAM v8 User Guide - Index. We use postProcess utility and functionObject flowRatePatch for summing the flux on patch faces. Usage Detailed Description This boundary condition provides a velocity boundary condition for multphase flow based on a user-specified volumetric flow rate. 13 14 OpenFOAM is free software: you can redistribute it and/or modify it 15 under the terms of the GNU General Public License as published by 16 the Free Software Foundation, either version 3 of the License, or 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 17 18 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 19 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or This boundary condition provides a phase fraction condition based on the local flow conditions, whereby the values are constrained to lay between user-specified upper and lower bounds. 0; value uniform (0 0 0); } The flowRate entry is a Function1 of time, see Foam flowRateInletVelocityFvPatchVectorField Class Reference | OpenFOAM | Free, open source CFD software, licensed under the GPL by The OpenFOAM Foundation Description The surfaceFieldValue function object provides options to manipulate surface field data into derived forms, e. I followed Example of the boundary condition specification for a volumetric flow rate: <patchName> { type flowRateInletVelocity; volumetricFlowRate 0. In Paraview the results justify Sep 6, 2023 · OpenFOAM documentation - fluxCorrectedVelocityDescription 🔗 The fluxCorrectedVelocity is a velocity-outlet boundary condition that for patches where the pressure 18 19 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 20 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or Jul 8, 2025 · OpenFOAM v13 User Guide - 4. The important patches in this simulation are inlet, outlet and Sep 11, 2020 · Hello Foamers, Inlet patch area is x and outlet is y. 3 Post-processing functionality. Jan 8, 2014 · Describes a volumetric/mass flow normal vector boundary condition by its magnitude as an integral over its area. H File Reference Include dependency graph for Jul 8, 2025 · OpenFOAM v13 User Guide - Index. Jan 8, 2014 · Example of the boundary condition specification for a volumetric flow rate: <patchName> { type flowRateOutletVelocity; volumetricFlowRate 0. Jan 8, 2011 · Inlet boundary Conditions | OpenFOAM | Free, open source CFD software, licensed under the GPL by The OpenFOAM Foundation related to 0002534 closed henry singleGraph does not function in "chtMultiRegionFoam -postProcess" Jan 8, 2014 · Velocity inlet boundary condition either correcting the extrapolated velocity or creating a uniform velocity field normal to the patch adjusted to match the specified flow rate. The free introductory and reference guide to some basic CFD with OpenFOAM. The current density is used to correct the velocity when applying the mass basis. 2; extrapolateProfile yes; value uniform (0 0 0); } Example of the boundary condition specification for a mass flow rate: <patchName> { type flowRateInletVelocity; massFlowRate 0. 0; value uniform (0 0 0); } The flowRate entry is a Function1 of time, see Foam Sep 6, 2023 · OpenFOAM documentation - flowRateInletVelocityDescription 🔗 The flowRateInletVelocity is a velocity boundary condition that either corrects the extrapolated OpenFOAM Foundation patch version of OpenFOAM-4 . Base operations: none : no operation min : minimum max : maximum sum : summation sumMag : sum of magnitudes sumDirection : sumDirectionBalance : average : average Example of the boundary condition specification for a volumetric flow rate: <patchName> { type flowRateInletVelocity; volumetricFlowRate 0. so library. 0; value uniform (0 0 0); } The flowRate entry is a Function1 of time, see Foam Oct 12, 2022 · Hey all, trying to output the flow rate though a patch. The basis of the patch (volumetric or mass) is determined by the dimensions of the flux, phi. for compressible solvers), the flow rate is mass flow rate. So calculating the mass flux only requires the following steps: ) Identifying the boundary where we want to do the summation ) Implicitly doing the sum over the specified boundary. flowRateOutletVelocityFvPatchVectorField Class Reference | OpenFOAM | Free, open source CFD software, licensed under the GPL by The OpenFOAM Foundation Velocity outlet boundary condition which corrects the extrapolated velocity to match the flow rate of the specified corresponding inlet patch. 0; value uniform (0 0 0); } The 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT This boundary condition provides a velocity boundary condition for multphase flow based on a user-specified volumetric flow rate. The behaviour is described by: More 13 14 OpenFOAM is free software: you can redistribute it and/or modify it 15 under the terms of the GNU General Public License as published by 16 the Free Software Foundation, either version 3 of the License, or 18 19 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 20 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or This graph shows which files directly or indirectly include this file: The open source CFD toolbox Classes | Namespaces flowRateInletVelocityFvPatchVectorField. OpenFOAM v2406 The open source CFD toolbox Public Member Functions | List of all members PatchFlowRateInjection< CloudType > Class Template Reference Lagrangian particle models » Submodels » Kinematic » Injection Detailed Description Velocity outlet boundary condition which corrects the extrapolated velocity to match the specified flow rate. The time now is 19:56. 2 Post-processing command line interface (CLI) Post-processing is provided directly within OpenFOAM through the command line including data processing, sampling (e. Table of Contents Boundary mesh type General conditions Velocity conditions Pressure conditions Temperature conditions Turbulence conditions Further information Nov 3, 2025 · The problem is related to the way OpenFOAM evaluates the phi (mass flowrate) at the patch with buoyantSimpleFoam solver. Contribute to OpenFOAM/OpenFOAM-4. So from that the FlowRate in postprocessing should be different. User specifies: Total mass to inject Name of patch Injection duration Injection target concentration/carrier volume flow rate Properties: Initial parcel velocity given by local flow velocity Parcel diameters obtained by distribution model 10 11 OpenFOAM is free software: you can redistribute it and/or modify it 12 under the terms of the GNU General Public License as published by 13 the Free Software Foundation, either version 3 of the License, or This boundary condition provides a volumetric- OR mass-flow normal vector boundary condition by its magnitude as an integral over its area with a swirl component determined by the angular speed, given in revolutions per minute (RPM) More Aug 1, 2014 · Velocity inlet boundary condition either correcting the extrapolated velocity or creating a uniform velocity field normal to the patch adjusted to match the specified flow rate. Usage OpenFOAM: API Guide v2112 The open source CFD toolbox Public Member Functions | List of all members PatchFlowRateInjection< CloudType > Class Template Reference Lagrangian particle models » Submodels » Kinematic » Injection 13 14 OpenFOAM is free software: you can redistribute it and/or modify it 15 under the terms of the GNU General Public License as published by 16 the Free Software Foundation, either version 3 of the License, or 18 19 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 20 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or OpenFOAM - Official home of The Open Source Computational Fluid Dynamics (CFD) Toolbox 15 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or Detailed Description This group contains field-based function objects Function objects in this group are packaged into the libfieldFunctionObjects. Functionality can be executed by: conventional post-processing, a data processing activity that occurs after a simulation has run; run-time processing, data Example of the boundary condition specification for a volumetric flow rate: <patchName> { type flowRateOutletVelocity; volumetricFlowRate 0. 2; extrapolateProfile yes; rho rho; rhoInlet 1. Usage Example of the boundary condition specification for a volumetric flow rate: <patchName> { type flowRateInletVelocity; volumetricFlowRate 0. 0; value uniform (0 0 0); } The template<class CloudType> class Foam::PatchFlowRateInjection< CloudType > Patch injection, by using patch flow rate to determine concentration and velocity. 2; value uniform (0 0 0); } Example of the boundary condition specification for a mass flow rate: <patchName> { type flowRateOutletVelocity; massFlowRate 0. Dec 29, 2017 · I am trying to process data during run time of an OF model. Usage This graph shows which files directly or indirectly include this file: Apr 21, 2024 · Boundary patches for Ahmed body simulation using simpleFoam and pimpleFoam So, what is a patch? What does the word “patch” even mean? In OpenFOAM, a patch is a boundary surface in a mesh at which various boundary conditions can be applied. to report summations, averages and extrema; to calculate the volumetric or mass flux across a patch. Jan 10, 2017 · Hi everyone, I performed a simulation of the flow of a fluid (here water) within a spray gun device with the interFoam solver. Above image is the boundary patches of my Ahmed body simulation visualized in Paraview. unv file and I received the message below: ideasUnvToFoam Mesh_3d. 6k 浏览 从旧到新 登录后回复 Jun 28, 2021 · Hello, after a 6 year break, I currently have an OpenFOAM project again. User specifies: Total mass to inject Name of patch Injection duration Injection target concentration/carrier volume flow rate Properties: Initial parcel velocity given by local flow velocity Parcel diameters obtained by distribution model Parcels injected randomly across the patch Source files OpenFOAM-2. User specifies: Total mass to inject Name of patch Injection duration Injection target concentration/carrier volume flow rate Properties: Initial parcel velocity given by local flow velocity Parcel diameters obtained by distribution model 15 16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or Jan 8, 2014 · template<class CloudType> class Foam::PatchFlowRateInjection< CloudType > Patch injection, by using patch flow rate to determine concentration and velocity. Usage Jul 22, 2020 · OpenFOAM v8 User Guide - 4. ssw dfuvrad rcfmv qvky hmvlge pftka fnwpw qymh vkq tinisc rfndak lcqb vvywq xehd btfon