# brenton_101

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1. ## Hydrostatic Pressure Reference Point

Hi, I am modelling heat transfer, (natural and forced convection) of a cabinet with an internal heat source. Please see attached figure. I am using the Boussinesq approximation and including gravity so need to use 'Hydrostatic pressure on' setting. Can someone please explain where to set the hydrostatic pressure origin? Am I right to assume it is in the middle of my outflow surface that is venting to atmosphere? Thanks in advance.
2. ## How to calculate percentage mass flux using AcuProbe?

Hi acupro, Could you please check if this is the correct method. All inlets/outlets consist of identical fluid - air. I have run my simulation again with the following settings: Species equation turned ON Advective Diffusive. Number of Species = 1. Inlet 1: Species1 = 0 Inlet 2: Species1 = 1 Is it correct to assume that approximately 95 percent of Inlet 2 flows through this arbitrary surface? Is this volume fraction? Thanks in advance
3. ## How to calculate percentage mass flux using AcuProbe?

Hi, I have created an arbitrary surface in my air duct model to calculate mass flux using AcuProbe, however this returns total mass flux through the surface. I have a system with two inlets (Inlet 1, Inlet 2) and three outlets (Outlet 1, Outlet 2, Outlet 3). Is it possible to quantify the amount of air from Inlet 1 only that flows through this arbitrary surface? I have created a surface in Acu console and did not apply any BCs. Only checked surface output. Thanks in advance
4. ## Turbulence Intensity Unit Clarification

Hi Ydigit, The issue is not with the definition of turbulence intensity but that my turbulence intensity parameter may be out by a factor of 100. In AcuConsole, the parameter is called Percent Turbulence Intensity, so for this I would simply input a value of 5 corresponding to 5 percent. However in HM Solve Browser, the parameter is called Turbulence Intensity. So should I input a value of 5 or 0.05 to represent 5 percent?? Hope this clears up any confusion.
5. ## Turbulence Intensity Unit Clarification

Hi, I have a question regarding the Turbulence Intensity parameter that is located under the solver browser in Hypermesh 2019.1 (AcuSolve User Profile). What are the units of this parameter? Is it represented as a percentage or ratio? (I've attached a screen snippet) For example in AcuConsole GUI, the turbulence intensity parameter is input as a percentage (e.g 2.5 for 2.5% turbulence intensity). Best regards Brenton
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