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Condensation of refrigerant inside the circular tube |
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#1 |
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Vishal Patil
Join Date: Apr 2011
Location: Pune,India
Posts: 3
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I am working on simulation of condensation of refrigerant inside the circular tube.
In this problem i have used Eulerian multiphase model ..It s asking bubble diameter for secondary phase(refrigerant in liquid phase)....how do i calculate it....Another problem is operating pressure .....My inlet pressure is 15.5 bar and outlet is 15.3....then what would be the pressure outlet condition and....... operating pressure. |
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#2 |
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Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
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Dear Vishal
Will u please elaborate your problem in detail.
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Simulation Is Determination Of Imagination Towards Approximation ® Best Regards Mubeen K Kurne |
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#3 |
New Member
Vishal Patil
Join Date: Apr 2011
Location: Pune,India
Posts: 3
Rep Power: 16 ![]() |
Hi ,
Dear sir, I am working on condensation of refrigerant inside the smooth long circular tube. I am using fluent for the same. My problem setup is like this Models - 1.Multiphase-Eulerian 2.Energy 3.K-e,realizable,std wall,mixture Materials- 1.R404a-vapor(primary phase)-Its properties 2.R404a-liquid-(secondary phase)-Its properties Phases 1.Primary-R404a-vapor 2.Secondary-R404a-liquid -Bubble diameter1e-05(assumed-do not know) phase interaction Drag-Symmetric Heat-ranz marshall Mass transfer-r404a vapor to r404a-liquid through evaporation condensation at constant saturation temp. surface tension constant Boundary conditions Inlet -Velocity inlet for mixture and each phase(Turbulence intensity 4% & Hydraulic dia 0.00814mm for each phase) outlet-pressure outlet-0 gauge pressure tube wall at constant wall temp.much more below saturation temp. operating pressure is atm.( ![]() Solution method phase coupled simple Volume fraction-modified HRIC, all others Quick initialization from all zones. I have not included Enthalpy My solution giving no condensation at any point in the tube........not a single sign. am i going in right way Please help me. |
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