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

What is the concept of increasing convective heat transfer coefficient with increase in Renolds number?

Generally Heat transfer coefficient of fluid increases with the increase in Reynolds number or velocity of fluid when it flows through a pipe. What parameters of fluid increases that causes an...

11 February 2017 6,574 8 View

The average Permeability for a composite system of rocks?

The routine and classical reservoir engineering divides the composite systems as either parallel, series, or a mix of both cases. In these systems, the overall systems permeability and porosity...

11 February 2017 3,161 11 View

What kind of tracer material used for flow visualisation in water and i would like to know relationship between RPM and Reynolds number?

I am working on the vortex formation inside closed circular cylinder with rotating bottom disk and injecting rhodamine B from 1 mm hole at the centre of top non rotating bottom disk but I am not...

11 February 2017 8,121 0 View

Can anybody explain in two-phase air-water adiabatic pipe flow case which solver is more relevant for simulation in OpenFOAM?

Hi everyone! I want to know that for two-phase air-water in pipe flow case, which solver is more relevant for simulating this problem in OpenFOAM for adiabatic conditions? I am using InterDyMFoam...

10 February 2017 2,834 3 View

What turbulence model and parameters to set on inlet of sintered/porous plate?

Hi, I am modelling a low Reynolds release of gas through sintered plate (microporous media) which is then combusted. The plate is approximated as surface with mass flow inlet boundary condition. I...

09 February 2017 5,037 3 View

Is there a way to establish the sheer rate on a fluid as a needle tip is being dragged through it at a specific velocity?

Shear rate can be approximated for a liquid flowing through a cylinder,.Can one calculate the shear rate of a fluid if an object is being dragged through it? in my case, I am 3d printing into a...

09 February 2017 3,857 4 View

Pressure drop in a double pipe heat exchanger

I am working on heat transfer and pressure drop study of tubular (double-pipe)heat exchanger.For numerical simulation ,I am using CFD software Ansys fluent 17.0.The boundary conditions i used...

08 February 2017 1,606 3 View

Multi phases boundary condition in ansys fluent

Hi everybody I use Ansys fluent and I want to solve a multiphase flow (liquid and gas containing solid) with euilerian method. is it accurate that I use no-slip wall boundary condition for solid...

06 February 2017 5,541 2 View

What should be the characteristics length for a rotationaly oscillating cylinder? will it vary with the angle of attack?

Hi, i am simulating flow past a rotaionally oscillating cylinder. i've read some papers related to this and found that some authors were taking Re based on the perimeter and some based on the...

06 February 2017 5,575 3 View

Is there any upper limit reynolds number in forchheimer equation application for porous media?

there is some papers that worked on reynolds number (lower and upper limit) for which darcy law can work. is there any upper limit reynolds number in forchheimer equation?

05 February 2017 8,866 4 View

Should I be getting the same contact angles for the same 1 µL drop volume on the different parts of a smooth horizontal glass plate surface ?

should I be getting the same contact angles for the same 1 µL drop volume on the different parts of a smooth horizontal glass plate surface ? how much deviation/varaition in the contact angles...

01 February 2017 3,812 3 View

Effect of mass flow rate on thermocouple response?

I am working with a counter flow double pipe heat exchanger. In order to collect some data for parametric analysis, I increased both mass flow rates by 1 L/min. But as far as mass flow rate was...

01 February 2017 1,480 3 View

Is there any vortex mixer that has temperature control?

I want to use vortex mixer that has temperature control when I am coating iron oxide nanoparticle with DMSA(dimercapto succinic acid). But it is difficult for me to find vortex mixer "with...

31 January 2017 9,210 5 View

FEA Boundary condition forqualify pressure vessel nozzle using ANSYS

Dear all, Currently I'm trying to qualify storage tank nozzle load using ANSYS (not NOZZLE FE), since the tank is too large to model i have sub modeled the same. (Later want to compute the...

27 January 2017 6,325 2 View

How to start formulating a 2D channel flow with Finite Volume-Arbitrary Lagrangian Eulerian Formulation(FSI Problem) ?

How to start formulating a 2D channel flow with Finite Volume-Arbitrary Lagrangian Eulerian Formulation numerically_FSI problem I want to model 2D channel flow which can address artery vessel...

27 January 2017 5,323 3 View

How to measure the height of water ripples at specific locations (as graphs over time), in a controlled tank?

I need to gather the diminishing wave graphs of water ripples (height over time), as caused by a water droplet or other central disturbance, in a circular tank of water. The points I'd measure...

24 January 2017 3,430 4 View

Can I use the homogeneoss model for euler-euler multiphase flow?

I am working on a venturi scrubber where there are three phases i.e air, water and particles. Air is considered as a continuous phase where water and particles are considered as a dispersed fluid...

24 January 2017 9,345 3 View

How to calculate the speed of the dispersion drops when electrospinning?

Hello! Does anyone know about speed flying from a Taylor cone of droplets? How to calculate it? We use horizontal electrospinning.

23 January 2017 7,433 3 View

Why do I see different behaviors from VOF model with and without dynamic refinement?

Hello all, I'm using Fluent for simulation of a droplet-particle impact problem. Droplet velocity is 0.7 m/s and particle moves in opposite direction with 7 m/s to make a head-on collision (I'm...

23 January 2017 1,486 4 View

Is there any experimental study of the turbulent multiphase flow (air + sand) around aerodynamics obstacles ?

Dear all,I am looking for any work concerning the Experimental study of the turbulent multiphase flow (air - sand) around any aerodynamics obstacles (cylinder, vehicles, wind turbine blades...

21 January 2017 2,131 2 View

How to do DPM (Nanoparticle dispersed in air) for a 90 degree bend using LES?

Using Nanoparticle as discrete phase and air as continuous phase, how to do modelling for calculating the flow and deposition rate on walls of pipe having 90 degree bend. Kindly share some...

20 January 2017 9,684 2 View

COMSOL simulation of mixing of two miscible liquids?

I have a COMSOL simulation running well of the mixing of two water-based solutions in a microfluidics channel. I now needed to simulate a similar experiment but where the solutes are dissolved in...

19 January 2017 3,537 3 View

COMSOL, Problem in the mesh generation?

Hello everyone, I have a problem but I don't know how to solve it. I am working on interaction of the wake an elliptic cylinder with boundary layer on a flat plate. The geometry are included of an...

19 January 2017 3,718 3 View

Hello.. Is it possible to analyse the cross sectional area propagation of a flame by using mesh free method ?

I need to find the rate of flame propagation instead of DNS (direct numerical simulation) Thanks in advanced

19 January 2017 9,493 1 View

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