Kihwan Lee

Computational Fluid Dynamics

Computational Fluid Dynamics

Model Equations (simple equations used as test base)

Burger's equation, Non-Conservative Form

Burger's equation, Conservative Form

Heat Equation w/ Free/Fixed Boundary

Spline interpolation using Cubic spline: u need to provide starting point, ending point, and y values for each point

Polynomial and Cubic spline fit using the given set of data

in Matlab

Caputring Shock by Murman-Cole Method

Quasi 1-D Stegger-Warming

Quasi 1-D Modified Stegger-Warming

Couette Flow using Implicit, Explicit, CrankNicolson

2-D MSW Euler Solver, implicit, explicit

2-D MSW Navier Stokes Solver: change viscosity coef'

3-D MSW Euler Solver : has minor problems

Multigrid : coming up

Adjoint : coming up

in Fortran

2D Euler Solver written in Fortran. Need variable definitions. Can't find the include files. Please supply variable definitions.

Mathematical analysis

on wave and shock front

1-D Euler Solver using 2nd order centered Godunov scheme

Spectral Methods

(functions are not included for Matlab file)

Poisson Solver using Sine Transform

Wave Equation by Chebyshev Tau Method

Burger's Equation Shock capturing by FFT collocation with filtering

Unstructured Mesh

Poisson/Heat Equation solver in 2-D Unstructured Mesh

Poisson/Heat Equation solver in 3-D Unstructured Mesh

Compressible Flow

Wave Drag Calculations for Cone

Wave Drag for Elliptic Area Distribution

Wave Drag for Elliptic Source Distribution

Incompressible Flow

Potential Flow

Lift Coefficient

Method of Characteristics

2-D Channel flow using Characteristics

Parallel Computing: MPI & OpenMP

(MPI) and OpenMP for parallel computing

in Fortran

Poisson/Heat Equation solver using send/receive in MPI

Poisson/Heat Equation solver using Buffered send/receive in MPI

Poisson/Heat Equation solver using Non-blocking send/receive in MPI

Poisson/Heat Equation solver using sendreceive in MPI

Poisson/Heat Equation solver using OpenMP with Conjugate Gradient minimization algorithm

Poisson solver using Domain Decomposition Method : This is one most painful program I've ever written.

Graph Partitioning for Paralleling computing

Aeroelasticity

Calculating divergence speed of a stright wing using Strip theory and Pradtl's lifting line theory

Calculating flutter speed of wing using Theodorsen function -- fully unsteady 2D wing with 2 degrees of freedom

Load transfer between CFD and FEM grid: the first program I have written without having the entire code planned

Matrix Computations

Ellipsoid Eigenvectors and New Coordinate System

Deflection Angle and all that

SVD for mystery.pgm

SVD for the example marix

Tri-diagonal Solver

Finite Element Methods

FEM Lecture 1 Lecture 1

FEM Lecture 2 Lecture 2

FEM Lecture 3 Lecture 3

FEM Example 1 Heat Transfer

FEM Example 2 Example 1

FEM Example 3 Example 2

Boundary Layer Analysis

Boundary Layer Analysis

External Flow, Hydraulic/Thermal/Laminar/Turbulent (file unavailable) Blasius solution/Hydraulic/Thermal boundary layer analysis

Flat Plate Boundary Layer, Laminar/Turbulent Detailed Turbulence layer

Internal Flow Friction Factor, Laminar/Turbulent

Internal Flow Boundary Velocity Profile/Moody Chart, Laminar/Turbulent

Turbulence, y+ Calculation

PID, Lead & Lead-Lag Controllers

Simple controller addition to the unstable system

Aero-Structural Optimization

Aero Structural Optimization Code in Matlab

Aero Structural Optimization Report

Genetic Algorithm

Genetic Algorithm Code in Fortran, found in the web. My implemetation is missing.

Optimization

Modified Cholesky Factorization Program

Optimization of distance between multiple pts on the sphere

Bisection Algorithm

Line Search Algorithm

Optimization Algorithm

Optimization of distance between 4 pts on the sphere

Optimization of distance between 56 pts on the sphere

Optimization of distance between 389 pts on the sphere

Classification R Code

Logistic Regression R Code

Support Vector R Code

Tree R Code

TensorFlow Image Recognition R Code

Neural Network Image Recognition R Code

Tensor Flow/Neural Network Image Recognition Report

Neural Network Code in Fortran, found in the web.

Exploratory Data Analysis in Python

Exploratory Data Analysis Write-up

Time Series Forecast in Python

Time Series Forecast Write-up

AI Lecture 1

Satellite System Design

Spacecraft Sizing Tool applied to MAVEN

MAVEN analyzed using Spacecraft Sizing Tool

Orbital Mechanics

Excel spreadsheet for Orbital Trajectory calculation

Orbital Mechanics Class

Thermal

Thermal Class

Liquid Rocket Design

Small Liquid Rocket Design

Liquid Rocket/Rocket Propulsion Fundamentals/Solid Rocket Propulsion/Combustion Instability

3D AM, Bracket Design Case Study

3D AM, Hanger Design using Generative Additive Manufacturing

3D AM, Design Practice following DfAM

3D AM, Cost Analysis

House Construction Plan