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加油晶米~

新虫 (初入文坛)

[求助] 急求DPM边界条件为wall flim的算例 已有1人参与

急求DPM边界条件为wall flim的算例,谢谢啊~  目前使用fluent14.5,做两相流离散相模拟
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billywxw

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Ilikeitforyoutobestill~~~~~~~~
2楼2016-03-07 09:26:02
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加油晶米~

新虫 (初入文坛)

引用回帖:
2楼: Originally posted by billywxw at 2016-03-07 09:26:02
同求

你也做这块吗?

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3楼2016-03-07 10:26:32
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MichaelLaw

新虫 (初入文坛)

同求,目前我也在学习这方面内容,希望共同交流。
4楼2016-03-13 23:41:06
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dai26520

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【答案】应助回帖

百度一下这个官方算例:Modeling of Film Separation at Backward Facing Step
1. Introduction
Backward facing step is a widely used benchmark problem to evaluate the performance of turbulence
models for the prediction of separated flows & reattachment. In this tutorial the backward facing step
problem is used to demonstrate the use of Eulerian Wall Film (EWF) model for predicting the separation
of liquid film.
The EWF model can be used to predict the formation and flow of thin liquid films on wall surfaces. This
model can be used with:
• Discrete Phase Model – Particles are collected on the wall  to form the film.
• Eulerian Multiphase Model – Secondary phase mass is collected on the wall  to form the film.
In EWF model, the film is not resolved using mesh normal to the surface, instead this model uses a vir-
tual film on the surface. In many cases you would be interested in modeling a thin film flow which can
separate, strip and evaporate but does not affect the core flow-field. In general multiphase frame work,
this thin film modeling is computationally expensive because a very fine mesh is required near the
surface to resolve the film and the inter-phase flux needs to be calculated accurately.
EWF model can only be used with 3D solver and EWF model assumes that film always flows parallel to
the surface so normal component of film velocity is zero. The film is assumed to have a parabolic velocity
profile & bilinear temperature profile across its depth.
In this tutorial you will learn to:
• Couple EWF model with Discrete Phase Model to create film.
• Model detachment of film at edge.
• Model film heat  transfer.
个性只是一个代号,做好自己就行
5楼2016-03-14 09:00:53
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dai26520

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引用回帖:
4楼: Originally posted by MichaelLaw at 2016-03-13 23:41:06
同求,目前我也在学习这方面内容,希望共同交流。

百度一下这个官方算例:Modeling of Film Separation at Backward Facing Step
1. Introduction
Backward facing step is a widely used benchmark problem to evaluate the performance of turbulence
models for the prediction of separated flows & reattachment. In this tutorial the backward facing step
problem is used to demonstrate the use of Eulerian Wall Film (EWF) model for predicting the separation
of liquid film.
The EWF model can be used to predict the formation and flow of thin liquid films on wall surfaces. This
model can be used with:
• Discrete Phase Model – Particles are collected on the wall  to form the film.
• Eulerian Multiphase Model – Secondary phase mass is collected on the wall  to form the film.
In EWF model, the film is not resolved using mesh normal to the surface, instead this model uses a vir-
tual film on the surface. In many cases you would be interested in modeling a thin film flow which can
separate, strip and evaporate but does not affect the core flow-field. In general multiphase frame work,
this thin film modeling is computationally expensive because a very fine mesh is required near the
surface to resolve the film and the inter-phase flux needs to be calculated accurately.
EWF model can only be used with 3D solver and EWF model assumes that film always flows parallel to
the surface so normal component of film velocity is zero. The film is assumed to have a parabolic velocity
profile & bilinear temperature profile across its depth.
In this tutorial you will learn to:
• Couple EWF model with Discrete Phase Model to create film.
• Model detachment of film at edge.
• Model film heat  transfer.
个性只是一个代号,做好自己就行
6楼2016-03-14 09:01:00
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dai26520

专家顾问 (著名写手)

【答案】应助回帖

引用回帖:
2楼: Originally posted by billywxw at 2016-03-07 09:26:02
同求

百度一下这个官方算例:Modeling of Film Separation at Backward Facing Step
1. Introduction
Backward facing step is a widely used benchmark problem to evaluate the performance of turbulence
models for the prediction of separated flows & reattachment. In this tutorial the backward facing step
problem is used to demonstrate the use of Eulerian Wall Film (EWF) model for predicting the separation
of liquid film.
The EWF model can be used to predict the formation and flow of thin liquid films on wall surfaces. This
model can be used with:
• Discrete Phase Model – Particles are collected on the wall  to form the film.
• Eulerian Multiphase Model – Secondary phase mass is collected on the wall  to form the film.
In EWF model, the film is not resolved using mesh normal to the surface, instead this model uses a vir-
tual film on the surface. In many cases you would be interested in modeling a thin film flow which can
separate, strip and evaporate but does not affect the core flow-field. In general multiphase frame work,
this thin film modeling is computationally expensive because a very fine mesh is required near the
surface to resolve the film and the inter-phase flux needs to be calculated accurately.
EWF model can only be used with 3D solver and EWF model assumes that film always flows parallel to
the surface so normal component of film velocity is zero. The film is assumed to have a parabolic velocity
profile & bilinear temperature profile across its depth.
In this tutorial you will learn to:
• Couple EWF model with Discrete Phase Model to create film.
• Model detachment of film at edge.
• Model film heat  transfer.
个性只是一个代号,做好自己就行
7楼2016-03-14 09:01:07
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8楼2016-03-15 00:28:43
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837750906

新虫 (初入文坛)

引用回帖:
3楼: Originally posted by 加油晶米~ at 2016-03-07 10:26:32
你也做这块吗?
...

楼主能否指教一二,我也被这个问题困扰了很久了

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9楼2017-02-26 20:48:58
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