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\begin{document}
\title{P2 - Numerical Flow Simulation 2017 - Project Plan Group 7}
\author[1]{Yamin Sepehri}%
\author[1]{Maren Haram}%
\author[1]{Lars Maukon Muren}%
\author[1]{Rafael Graf}%
\affil[1]{EPFL}%
\vspace{-1em}
\date{\today}
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\section{General Discription of
Project}
{\label{731632}}
In this project, we will examine the air flow behavior around a NACA
2412 airfoil. This will be done through experimental, theoretical and
numerical analysis. The experimental study in the subsonic windtunnel in
Geneva will be carried out by a Hepia student, while computer
calculation, simulation and visualization will be done by us at EPFL. We
will study the drag, lift and pressure coefficients at different angles
of attack and compare the different results obtained through the
different types of analysis.~
The first main required task of the project will be to analyse the flow
around the airfoil with the resources available: the softwares XFOIL and
Ansys FLUENT, and an experimental study in the Hepia Air Tunnel. The
second main task will be to compare the different results obtained and
communicate this through a scientific report.
\par\null\selectlanguage{english}
\begin{figure}[h!]
\begin{center}
\includegraphics[width=0.70\columnwidth]{figures/NACA-2412/NACA-2412}
\caption{{Naca 2412 Foil\textsuperscript{1}
{\label{636583}}%
}}
\end{center}
\end{figure}
\subsection{Roles}
{\label{913041}}
\textbf{Lars}~- Allocator. Responsible for Theoretical study.~
\textbf{Maren~}- Communcator. Responsible for Numerical Study.
\textbf{Rafael} - Planner. Responsible for Theoretical Study.
Responsible for contact with Hepia Student.
\textbf{Yamin~}- Monitor. Responsible for Numerical Study.~
\subsection{Fixed values for all three
studies}
{\label{214287}}
\textbf{Air density -~}1.225 kg/m\^{}3
\textbf{Dynamic Viscosity -~}1.789*10\^{}-5 Pa s
\textbf{Upstream Pressure -} 1.013*10\^{}5 Pa
\textbf{Upstream Flow Velocity -~}Fixed Value, not yet decided
\textbf{Wingspan -~}0.293 m
\textbf{Airfoil Chord -} 0.15 m
\section{Experimental Study}
{\label{520471}}
\textbf{Angle of attack that will be studied -~}-4 to 20 degrees, step
of 4 degrees
The Experimental study will be carried out by Guillaume Collot, at the
Hepia wind tunnel. This specific wind tunnel has a quadratic cross
section of 0.305m x 0.305m, length of 0.6m and a maximum air speed of 36
m/s. The foil will be placed in the middle of the tunnel, and Guillaume
Collot will provide us with data for computation of Lift, Drag and
Pressure Coefficient around the surface in order to make a polar diagram
and study each angle of attack. We will have to study the effect of the
walls around the airflow to find appropriate boundary conditions for the
RANS analysis.
\section{Theoretical Study}
{\label{734014}}
\textbf{Angle of attack that will be studied -~}-4 to 20 degrees, step
of 2 degrees ~
XFoil is an application developed at MIT in order to solve flow around
ordinary NACA airfoils for inviscid or viscid flows. It utilize
potential flow method to solve inviscid flow and an iterative method for
viscous flow. With the help of the `cseq' code of this software, it is
possible to analyze the flow around an airfoil with a variety of angles
of attack. It is worth mentioning that XFoil has a really efficient code
and it solves the flow around different airfoils very quickly.
\section{Numerical Study}
{\label{713588}}
\textbf{Angle of attack that will be studied -~}-4 to 20 degrees, step
of 4 degrees
A Numerical Study with a RANS approach~ is also necessary for this
project, as the differential equations for the air flow are hard or
impossible to solve analytically. The software Ansys FLUENT will be
utilized to carry out the computation regarding the numerical study.~ It
is necessary to pick appropriate meshes, as well as locations for the
inflow and outflow of the simulation, in accordance with the
experimental study.~ Post-process of the simulations by visualizing the
flow with tools as streamlines, contour plots, graphs, vector fields,
etc will be computed.
\section{Deliverables}
{\label{239899}}
The deliverables for the project will be this project plan, a scientific
report and a self assessment. The project plan is important so all~
group members have a general idea of their role, and how the project
will play out on a general basis. The plan will not be followed
slavishly, but will work as a guideline of when different tasks should
be finished, and when it is necessary to move on in order to finish the
project in time. The task responsibilities listed above will have the
same purpose. For example if the theoretical study goes much faster than
the numerical study, we will of course put more resources and labor into
this part of the project.~
The scientific report will be written in Authorea, and will be started
on as soon as we obtain the first results. This will be good practice
for other reports we will be writing in the future, in the sense of
communicating our results in a well-presented and efficient way. The
self assessment will give us a chance to evaluate ourselves and the
other group members.
\section{Schedule}
{\label{459203}}\par\null\selectlanguage{english}
\begin{figure}[h!]
\begin{center}
\includegraphics[width=1.00\columnwidth]{figures/image1-(4)/image1-(4)}
\caption{{Project Schedule
{\label{331828}}%
}}
\end{center}
\end{figure}
\section{Reference :}
{\label{404474}}
~{\ref{636583}}~ By Mm.cobos (Own work) {[}CC BY-SA 3.0
(\url{https://creativecommons.org/licenses/by-sa/3.0}){]}, via Wikimedia
Commons. URL :
\url{https://upload.wikimedia.org/wikipedia/commons/d/d3/NACA\_2412.png}~
{[} Accessed the 24.10.2017.{]}~
\par\null
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