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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Dr. S.Vengadesan, IIT Madras</title>
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<div class="container">
<a class="navbar-brand" href="#"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown"
aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
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<ul class="navbar-nav nav ms-auto">
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<a class="nav-link text-white" href="./index.html">Home</a>
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<a class="nav-link text-white" href="./profile.html">Profile</a>
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<a class="nav-link text-white" href="./research.html">Research</a>
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<a class="nav-link text-white" href="./projects.html">Projects</a>
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</li>
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<a class="nav-link text-white" href="./news.html">Gallery</a>
</li>
</ul>
</div>
</div>
</nav>
</div>
<div class="container flex-fill">
<h5 class="p-2 text-secondary"> Multiphase Flow </h5>
<div class="row">
<div class="col-md">
<img src="./images/multiphase/resized/endigeri_resized.png">
<div class="caption">
<p align="justify">
Charge density distribution and streamlines.
EHD assissted melting in a square cavity with a circular electrode was studied.
A paramteric study was conducted to investigate the influence of relative strengths of Coulomb
and
buoyancy forces.
<a href="https://doi.org/10.1016/j.ijheatmasstransfer.2022.123120" class="text-secondary">
<i> International Journal of Heat and Mass Transfer, </i> 2022 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/multiphase/resized/ullas2021_resized.png">
<div class="caption">
<p align="justify">
Velocity and vapour fraction contours obtained using URANS-DCM model.
A study was performed to compare the efficacy of different
modelling approaches to predict turbulence and cavitation-induced phase changes.
<a href="https://doi.org/10.1108/HFF-09-2021-0600" class="text-secondary"> <i> International
Journal of
Numerical Methods for Heat & Fluid Flow, </i> 2022 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/multiphase/resized/khandelwal2020_resized.png">
<div class="caption">
<p align="justify">
Vorticity contours due to flow past elliptic cylinder.
A numerical study was conducted to analyze the wake of an elliptic cylinder in the presence of
fluid-fluid
interface.
<a href="https://doi.org/10.1115/1.4046770" class="text-secondary"> <i> ASME Journal of Fluids
Engineering,
</i> 2020 </a>
</p>
</div>
</div>
<!--
<div class="col-md">
<img src="./images/multiphase/resized/subburaj2019_resized.jpg">
<div class="caption">
<p align="justify">
Vorticity contours for flow past two cylinders arranged in tandem confiduration.
A parametric study on flow past two tandem cylinders near a free surface was performed
by varying the Froude number and inter-cylinder distance.
<a href="https://doi.org/10.1016/j.jfluidstructs.2019.102770" class="text-secondary"> <i> Journal of Fluids
and Structures, </i> 2019 </a>
</p>
</div>
</div>
-->
</div>
</div>
<div class="color2">
<div class="container flex-fill">
<h5 class="p-2 text-secondary"> Heat Transfer </h5>
<div class="row">
<div class="col-md">
<img src="./images/heat transfer/resized/kumar2019_resized.png">
<div class="caption">
<p align="justify"> Streamlines and isotherms over a backward facing step for different types of
stationary
fin arrangement.
The study compared heat transfer performance by different stationary fin arrangements with
that by
oscillating fin. <br>
<a href="https://doi.org/10.1016/j.ijheatmasstransfer.2018.09.001" class="text-secondary">
<i> International
Journal of Heat and Mass Transfer, </i> 2019 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/heat transfer/resized/sreekesh2021_resized.png">
<div class="caption">
<p align="justify">Turbulent shear stress and turbulent kinetic energy the center plane of
square duct
roughened with square (SQ) rib, Backward step (BS) rib, and Forward step (FS) rib .
The aim of the study was to understand the effect of rotation on heat transfer of a square
ribbed duct using
Large Eddy Simulation.
<a href="https://doi.org/10.1080/10407782.2021.1950410" class="text-secondary"> <i>
Numerical Heat Transfer
– Part A Application, </i> 2021 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/heat transfer/resized/vivek2020_resized.jpeg">
<div class="caption">
<p align="justify">Vorticity contours for fluid flow past four elliptic cylinders.
The study looked at influence of cylinder arrangement on heat transfer characteristics was
investigated.
<a href="https://doi.org/10.1080/01457632.2020.1826739" class="text-secondary"> <i> Heat
Transfer
Engineering, </i> 2021 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/heat transfer/resized/shaafi2014_resized.jpeg">
<div class="caption">
<p align="justify">
Instantaneous and time-averaged isotherms from the control rod in unbound condition.
In this study, the influence of the wall proximity on the heat transfer for flow past a
cylinder with an
upstream control rod was investigated and compared with that of an unbound condition.
<a href="https://doi.org/10.1080/10407782.2013.857263" class="text-secondary"> <i> Numerical
Heat Transfer –
Part A Application, </i> 2013 </a>
</p>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="color1">
<div class="container flex-fill">
<h5 class="p-2 text-secondary"> Turbulence Modelling </h5>
<div class="row">
<div class="col-md">
<img src="./images/turbulence/resized/sai2022_resized.png">
<div class="caption">
<p align="justify">
Turbulent viscosity predicted by different hybrid models for flow in a cyclone separator.
The study explored three different hybrid LES/RANS approaches, namely, detached eddy
simulation (DES),
delayed detached eddy simulation (DDES), and improved delayed detached eddy simulation
(IDDES)
for flow in cyclone separator.
<a href="https://doi.org/10.1115/1.4052050" class="text-secondary"> <i> ASME Journal of
Fluids
Engineering, </i> 2022 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/turbulence/resized/shyam2009_resized.jpg">
<div class="caption">
<p align="justify">
Mean span-wise vorticity
for uniform flow past two unequal sized square cylinders arranged side-by-side.
LES technique was employed to simulate flow for different transverse gaps.
<a href="https://doi.org/10.1080/10618560903580013" class="text-secondary">
<i> International Journal of Computational Fluid Dynamics, </i> 2009
</a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/turbulence/resized/lankadsu2009_resized.png">
<div class="caption">
<p align="justify">
Instantaneous vortical structures for flow past a square cylinder.
Large eddy simulation of planar shear flow past a bluff body was studied.
<a href=" https://doi.org/10.1002/fld.2171" class="text-secondary">
<i> International Journal of Computational Fluid Dynamics, </i> 2009
</a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/turbulence/resized/ratnam2008_resized.jpg">
<div class="caption">
<p align="justify">
Time-averaged streamlines from non-linear k–ε, improved k–ω and DNS for
flow over a wall mounted cube.
The study compared the predictions by two equation turbulence models for complex flow
structure
over the cube.
<a href=" https://doi.org/10.1002/fld.2171" class="text-secondary">
<i> International Journal of Heat and Mass Transfer, </i> 2008
</a>
</p>
</div>
</div>
</div>
</div>
</div>
<div class="color2">
<div class="container flex-fill">
<h5 class="p-2 text-secondary"> Unsteady Aerodynamics </h5>
<div class="row">
<div class="col-md">
<img src="./images/aerodynamics/resized/de2019_resized.jpeg">
<div class="caption">
<p align="justify">
Lagrangian coherent structures along the spanwise axis of different wings.
In this study, the aerodynamics of flapping wings sujected to gusty inflow was investigated.
<a href="https://doi.org/10.1017/aer.2019.50" class="text-secondary"> <i> The Aeronautical
Journal, </i>
2019 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/aerodynamics/resized/srinidhi2017_resized.jpg">
<div class="caption">
<p align="justify">
Time evolution of vorticity and pressure contours for tandem flapping wings.
The study focussed on the ground effect on the aerodynamics of tandem flapping wings.
<a href="https://doi.org/10.1016/j.compfluid.2017.04.006" class="text-secondary"> <i>
Computers and
Fluids, </i> 2017 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/aerodynamics/resized/shaafi2017_resized.jpg">
<div class="caption">
<p align="justify">
Instantaneous vorticity contours from a rotating cylinder.
Laminar flow past a rotating cylinder near a plane wall was studied using immersed boundary
method
to understand the effects of wake-wall interactions.
<a href="https://doi.org/10.1016/j.oceaneng.2017.04.044" class="text-secondary"> <i> Journal
of Ocean
Engineering, </i> 2017 </a>
</p>
</div>
</div>
<div class="col-md">
<img src="./images/aerodynamics/resized/sudhakar2010_resized.jpg">
<div class="caption">
<p align="justify"> Contours of vorticity from flapping wings.
A 2D numerical study was conducted to investigate the unsteady aerodynamic forces
acting on falpping insect wings.
<a href="https://doi.org/10.1016/j.compfluid.2009.11.004" class="text-secondary"> <i>
Computers and
Fluids, </i> 2010 </a>
</p>
</div>
</div>
</div>
</div>
</div>
<div class="color1">
<div class="container">
<table class="table table-borderless">
<h5 class="p-2 text-secondary"> Computing Resources </h5>
<thead class="table-borderless">
<tr>
<th scope="col"></th>
<th scope="col" class="text-center">System</th>
<th scope="col" class="text-center">Cores</th>
<th scope="col" class="text-center">CPU</th>
<th scope="col" class="text-center">RAM (GB)</th>
</tr>
</thead>
<tbody>
<tr>
<td scope="row">Master</th>
<td>Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz</td>
<td align="right">8</td>
<td align="right">16</td>
<td align="right">161</td>
</tr>
<tr>
<td scope="row">Node 1</th>
<td>Intel(R) Xeon(R) CPU E5-2640 v4 @ 2.40GHz</td>
<td align="right">10</td>
<td align="right">20</td>
<td align="right">161</td>
</tr>
<tr>
<td scope="row">Node 2</th>
<td>Intel(R) Xeon(R) CPU E5-2640 v4 @ 2.40GHz</td>
<td align="right">10</td>
<td align="right">40</td>
<td align="right">161</td>
</tr>
<tr>
<td scope="row">Node 3</th>
<td>Intel(R) Xeon(R) Gold 5218 CPU @ 2.30GHz</td>
<td align="right">10</td>
<td align="right">32</td>
<td align="right">126</td>
</tr>
<tr>
<td scope="row">Node 4</th>
<td>Intel(R) Xeon(R) Gold 5218 CPU @ 2.30GHz</td>
<td align="right">10</td>
<td align="right">32</td>
<td align="right">126</td>
</tr>
</tbody>
</table>
</div>
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CFD Lab <br>
<a href="https://apm.iitm.ac.in/" class="text-white text-decoration-none"> Department of Applied
Mechanics and Biomedical Engineering
</a> <br>
<a href="https://www.iitm.ac.in/" class="text-white text-decoration-none"> Indian Institute of
Technology
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