|
[Sponsors] |
May 6, 2017, 10:14 |
Air flow through intake manifold
|
#1 |
New Member
Genis Busquets
Join Date: May 2017
Posts: 1
Rep Power: 0 |
Hi my name is Genis I'm new here and I started with Ansys 4 months ago but I'm a rookie especially in Fluent. I need help with a Fluent simulation where the flow mass rate on entry became different with the mass flow rate on outlet and I don't know why, does anybody know which could be the problem? I fix an atmospheric pressure for inlet and a flow mass for outlet.
Here some details: My simulation consists on intake manifold system for a four cylinder engine. I want to know if the design distribute the same air on the different manifolds. For this I have the fluid body meshed with Body sizing and Inflation function with a total of 490.000 cells. For Fluent I'm working on Steady with k-epsilon and k-omega SST viscous models. The Boundary conditions are: on entry a pressure inlet of atmospheric value, 3 outlets with wall type and 1 of the open with a mass flow of 0,06 kg/s Outward (obtained of an Engine Simulation software when the engine works at 9000 rpm). The idea is to analyze the pressure lost and prove that it's similar for each runner. An special detail is that the system have a restrictor with 20 mm of dimeter, and that causes a high velocities around 200 m/s. For this I run the model with ideal gas. The problem is when I look at the post process results and see that the flow mass rate on inlet doesn't match with the flow mass rate on outlet. Running the model with a mass flow rate of 0,015 kg/s works well and entry a outlet matches but not for high velocities. I show you an image of an intake manifold with the same design I have. Thanks for any help and sorry for my english, Genis. Last edited by Genis; May 6, 2017 at 11:57. Reason: Add information |
|
Tags |
air intake, convergence problem, mass flow rate, subsonic flow |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
analyzing the temperature of fliud (air) flow inside an underground duct. | arshbunny | CFX | 9 | April 3, 2014 09:52 |
Forced Convection: 2D fan (forced air flow source) | acdc_cfd | FLUENT | 0 | March 17, 2014 09:34 |
Modeling the mixing of air and kerosene in a flow channel | StefanG | CFX | 3 | June 11, 2012 21:21 |
air bubble is disappear increasing time using vof | xujjun | CFX | 9 | June 9, 2009 08:59 |
HELP!!! Indoor air flow pattern | Peter Zhang | Main CFD Forum | 4 | November 3, 1999 03:49 |