|
[Sponsors] |
Condensation of refrigerant inside the circular tube |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
April 28, 2011, 08:33 |
Condensation of refrigerant inside the circular tube
|
#1 |
New Member
Vishal Patil
Join Date: Apr 2011
Location: Pune,India
Posts: 3
Rep Power: 15 |
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. |
|
April 30, 2011, 08:19 |
|
#2 |
Member
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 16 |
Dear Vishal
Will u please elaborate your problem in detail.
__________________
Simulation Is Determination Of Imagination Towards Approximation ® Best Regards Mubeen K Kurne |
|
May 2, 2011, 05:31 |
|
#3 |
New Member
Vishal Patil
Join Date: Apr 2011
Location: Pune,India
Posts: 3
Rep Power: 15 |
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.(my condensing pressure is 15 bar gauge..... what to be used operating pressure and pressure at the outlet) 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. |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Argon gas inside a steel tube? | rskrishna87 | CFX | 3 | April 27, 2011 20:26 |
Tube inside a tube simulation | Rashmichem | Main CFD Forum | 0 | December 14, 2010 02:52 |
condensation on horizontal tube??? | Wikie | FLUENT | 0 | July 30, 2010 05:53 |
meshing F1 front wing | Steve | FLUENT | 0 | April 17, 2003 13:37 |
emptying liquid from spinning circular tube | uvce | Main CFD Forum | 0 | July 2, 1999 11:26 |