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@hurricane007 谢谢谢谢!您是做什么领域的?
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@hurricane007 了解了,你们做哪个方向
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老师您好,我想请教一个问题,我按照CFD Online 上关于 coalCollidingChemistryFoam的讨论,在OpenFOAM5.0 的coalChemistryFoam中添加碰撞模型,但是编译之后出现了下面这样的错误,是不是CFD Online上的方法不适用于OpenFOAM5.0?还是有其他需要修改的地方?
wmakeLnInclude: linking include files to ./lnInclude could not open file surfaceWriter.H for source file coalParcel/makeCoalParcelSubmodelsAdd.C due to No such file or directory could not open file makeParcelHeatTransferModels.H for source file coalParcel/makeCoalParcelSubmodelsAdd.C due to Too many open files could not open file makeReactingMultiphaseParcelCompositionModels.H for source file coalParcel/makeCoalParcelSubmodelsAdd.C due to Too many open files could not open file makeReactingParcelPhaseChangeModels.H for source file coalParcel/makeCoalParcelSubmodelsAdd.C due to Too many open files could not open file makeReactingMultiphaseParcelDevolatilisationModels.H for source file coalParcel/makeCoalParcelSubmodelsAdd.C due to Too many open files could not open file makeReactingMultiphaseParcelSurfaceReactionModels.H for source file coalParcel/makeCoalParcelSubmodelsAdd.C due to Too many open files In file included from /public/software/apps/openfoam/OpenFOAM-5.0/src/lagrangian/intermediate/lnInclude/FacePostProcessing.H:182:0, from /public/software/apps/openfoam/OpenFOAM-5.0/src/lagrangian/intermediate/lnInclude/makeParcelCloudFunctionObjects.H:31, from coalParcel/makeCoalParcelSubmodelsAdd.C:27: /public/software/apps/openfoam/OpenFOAM-5.0/src/lagrangian/intermediate/lnInclude/FacePostProcessing.C:29:27: fatal error: surfaceWriter.H: No such file or directory #include "surfaceWriter.H" ^ compilation terminated. make: *** [Make/linux64GccDPInt32Opt/coalParcel/makeCoalParcelSubmodelsAdd.o] Error 1
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@熊咔咔 我大概回答一下,如果不对期待大家指出
OpenFOAM里面是把particle打包在parcel里面了的,但是如果 1 particle/parcel 就和particle没有本质区别。
parcel是一个打包的概念,把多个性质差不多的颗粒打包成一个来追踪,减少计算量,其直径是等效直径,比如 n particles/parcel, 直径是 (nd)^(1/3),但是particle force 是 nF。正常来讲最大n particles/ parcel 的这个n应该是小于最小cluster包含颗粒数量。如果原先用1particle/parcel 计算需要的时间是T,用parcel 的 n particles/parcel,假设总颗粒数量是 N,那么追踪的parcel数量减少到N/n,需要的时间可以粗略估计为是 T*(n/N)^0.5 -
@hurricane007 我大致明白了,parcel是为了简化计算的而设置的,particles是指实际颗粒?
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@hurricane007 我试了试fluent,好像particle track并不是指实际颗粒额,感觉用streams track更合适点。。。
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@yuanlee2011 您好,请问您在DPMFoam中添加粒子标量温度T实现了吗,最近在做这方面内容,希望得到一些指点
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FLUENT DDPM 只能压力基求解,如果马赫数比较高,有其他的方法吗?CFDEM可以么?