Fluid Mechanics

Fluid mechanics is the study of fluids and the forces on them. Fluid mechanics can be divided into fluid statics, the study of fluids at rest;... | Contact experts in Fluid Mechanics to get answers

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Questions related to Fluid Mechanics

Ιs there a known attempt to unify fluid mechanics with point objects mechanics ?

Physics is made of 3 main branches: classical mechanics "point mass" including gravity, electromagnetism (80% of phenomena) & fluid mechanics. The 1st and 3rd are so far conceptually the most...

02 August 2023 9,142 5 View

Which journals have fast publication in biomedical engineering?

I try to find fast publications journals in biomedical engineering.

14 June 2023 5,299 5 View

In XRD analysis having 2 different FWHM, original data FWHM value and after refinement having different FWHM, which I can take for crystallaitesize?

In XRD analysis I am having 2 different FWHMs, one is the original data FWHM value(0.096), and after refinement, I am having different FWHMs(0.38), which I can take for crystallite size...

01 June 2023 8,262 4 View

How does convection affect the temperature in the surface and convection affect the formation of mountains and the temperature in the surface ground?

09 April 2023 8,494 4 View

How to solve error?

Hi Everyone, I am solving a simple heat transfer problem of pipe at a constant temperature. I want to find the heat loss to ambient using radiation and convection but show the following...

03 July 2022 3,339 3 View

How to compute the volume of the elements formed in 3D mesh generation using Gmsh?

Computation of area (2D) and volume (3D) of the elements from mesh generation using Gmsh.

15 September 2021 1,434 2 View

Can non-iterative method in Fluent be used for simulating turbulent flow?

I want to use LES to simulate the flow past a sphere at high Re by non-iterative PISO method, which is much faster than iterative method. However, the result of non-iterative PISO is far from the...

22 August 2021 9,592 7 View

Temperature/Pressure expansion issues with bioreactor?

I operate a bioreactor at 50 Celsius, whose heating system failed. Upon fixing the heating system within the next couple of days after failing, I noticed that there is a quite a bit of water that...

12 July 2021 9,007 4 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

03 March 2021 2,323 5 View

Cylinder drag from PIV data?

Hello, I have circular cylinder d=15 mm in diameter in flow velocity 5 m/s. The flow field was measured by PIV and the measured area is ca. 125x80 mm, perpendicular to the cylinder axis. The...

15 December 2020 8,133 4 View

Is there any method to estimate scale of eddy viscosity?

Hi, I am currently studying turbulence theory, and eddy viscosity keeps bothering me. Is there any way to estimate scale of eddy viscosity? For example, textbook proposes \nu_T ~ ul, in which u...

03 December 2020 740 6 View

What are the application of graph theory to fluid mechanics?

What are the application of graph theory to fluid mechanics? Kind help if any papers kind help Any relation to 1) distance in graphs 2) graph coloring 3) graph Decomposition Or any other fields...

09 November 2020 10,090 3 View

What is the best solver in OpenFOAM to solve a shockwave problem in a pipe?

The problem is an inviscid flow in a 2 m pipe, with 1 m/s and 0.5 m/s inlet and outlet initial velocity that produce a normal shock at x=1.5 m. It will be so appreciated if someone introduce me...

06 November 2020 9,938 4 View

In microfluid, is it hard to generate drop with smaller than channel diameter?

Hi! After weeks of testing we get control of the drop size, by put oil pump vertical and adjust the oil flow rate. However, we found the drop size becomes crazily deviated when trying to get drop...

29 October 2020 1,181 6 View

How to measure the equivalent sand-grain roughness of a sandpaper?

I want to use standard sandpapers of different grit sizes to impart flow resistance to a surface. I am wondering how to convert the roughness of sandpaper to an equivalent sand-grain roughness. Is...

19 October 2020 9,627 3 View

How to control droplet size in microfluid?

Hi! We realise the dripping in our microfluid chip (the + cross). Yet we wonder how can we control our droplet size to ~=70um sphere (the channel is a semicircle in 70um diameter) Can we...

15 October 2020 8,809 8 View

Lumped Parameter model for FLUID FLOW?

Why lumped parameter models for fluid flow are not found in texts. Or Why we are not lumping pressure (unlike Temperature) in a system?

10 August 2020 644 3 View

2. The Reynold’s number of a ship is _____________ to its velocity and length? (a) Directly proportional (b) Inversely proportional (c) Equal to ?

Fluid mechanics

21 July 2020 7,818 27 View

When do I start applying for PostDoc position?

I just have completed my 4th year in PhD. I have recently got acceptance from a prestigious fluid mechanics journal "Journal of Fluid mechanics. My second journal for submission is underway. I...

06 July 2020 7,508 4 View

Are acoustics and Fluid mechanics related?

Are acoustics and Fluid mechanics related? I am good in solid mechanics and wish to learn fluid mechanics. Will learning acoustics serve as a bridge between the two?

29 May 2020 8,449 7 View

What is a CFD and other question?

To me, a CFD is solve a fluid mechanics problem using mathematical approaches with the help of a computer. In other words, it is like a marriage between a mathematical model and numerical methods...

05 May 2020 2,938 25 View

Is there anyone, who's using ANSYS Fluent for solving fluid mechanics problem?

I need help regarding solution of heat and mass transfer problems using ANSYS.

13 April 2020 3,447 11 View

Simulation of an Air Solar Plate Collector in COMSOL Multiphysics. Problems with defining the Boundary Conditions ?

Dear all: I need help, I hope there is someone out there who can help me. I finish drawing the 2D geometry of an Air Solar Collector with an undulated absorber plate (in contrast with a flat...

20 March 2020 6,061 9 View

Air Velocities and Temperature Distributions inside an enclosed air cavity, modeled in COMSOL Multiphysics ?

Dear all : I'm trying to solve the following problem using COMSOL Multyphysics. I have an enclosed geometry (please see the attached images) with a top flat surface (the celing) and an undulated...

20 March 2020 7,581 5 View

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