Work Portfolio for Haydel Collins

About Me

I am currently a PhD Student at Duke University studying Computational Mechanics. Previously, I was an Engineer for the U.S. Army Corps of Engineers specializing in CFD modeling. I earned a Bachelor's and Master's of science from the LSU Department of Civil and Environmental Engineering. My experience with CFD simulation has fostered further interest in numerical & computational methods, programming & development, and application of high performance computing. My aim is to acquire more knowledge about cutting edge research and to develop methods that can be applied to improve the field of fluid and solid mechanics.

Take a look at my recent work.

Skills:

Python

Github

Matlab

HPC

HTML

Delft3D

HECRAS

ArcGIS

Linux

Personal:

In my free time, I enjoy traveling and exploring the outdoors with my wife and our two pups.

Work

Much of my recent work has revolved around application and development of the Proteus Toolkit in the context of multiphase flow simulations. In addition to R&D, I've had the opportunity to lead and provide support for Civil Engineering projects in the New Orleans area.

PROTEUS:

Fluid-Structure Interaction

Modular Floating Body with mooring line

3D FSI simulations of moored rigid bodies in various sea-states. This employs an Arbitrary Eulerian-Lagrangian (ALE) scheme for the dynamic meshing.

Oliviera Overtopping Validation

A 2D numerical wave tank with prescribed mesh deformation in the form of a wave paddle, accomplished via ALE

Overtopping

Comparative Overtopping of Levee Cross Sections

A comparison of efficiencies between various levee cross sections (monochromatic waves). Base (top-left), recurve wall (top-right), simple raise (bottom-left), flat wall (bottom-left).

Comparative Overtopping of Floodwall Cross Sections

A comparison of efficiencies between two flood wall cross sections (monochromatic waves). Bull nose (top), Base (bottom).

3D overtopping of non-primitive geometry

Overtopping for a non-primitive geometry, the computational domain was built from a STL of an idealized sector gate.

Miscellaneous

Steady State Flow through Drainage Structure

Flow through a drainage structure based on a design used in the West Shore Lake Pontchartrain flood protection study.

2D Comparison of Buckling Flow

A comparison between a developmental, monolithic VOF+Level-set method and a non-monolithic method with elliptic redistancing. More info can be found here.

3D Buckling Flow using monolithic conservative level-set

The monolithic conservative level set method applied to the buckling flow problem in 3D, which results in coiling as opposed to folding (2D).

Aerodynamic Shape Optimization using Genetic Algorithm

Simple shape optimization employing a genetic algorithm which minimizes for the drag coefficient.

3D Discrete Element Simulation

A multi-particle Discrete Element (DEM) simulation which was part of a code profiling exercise. This code was developed by researchers at Cold Regions Research and Engineering Lab.

Semi-Submersible Wind Turbine Platform

Assisted in running computationally intensive simulations of 3D moored objects as part of a collaboration with HR Wallingford based in the UK. Design credit goes to Tristan de Lataillade who built the simulation for his disertation

Publications

Papers

Manuel Quezada de Luna, J. Haydel Collins, Christopher E. Kees
An Unstructured Finite Element Model for Incompressible Two‐Phase Flow Based on a Monolithic Conservative Level Set Method
International Journal for Numerical Methods in Fluids, 03 February 2020
https://doi.org/10.1002/fld.4817

Dimakopoulos, Aggelos; Sklia, Maria; Collins, J. Haydel; Kees, Christopher; de Lataillade, Tristan
Advanced Wave Generation Systems for Numerical Modelling of Coastal Structures.
In: Goseberg, Nils; Schlurmann, Torsten (Hg.): Coastal Structures 2019. Karlsruhe: Bundesanstalt für Wasserbau. S. 712-722.
https://doi.org/10.18451/978-3-939230-64-9_071.

Theses

Haydel Collins
Method for Quantifying Floating Marsh Strength and Interaction with Hydrodynamics.
LSU Master's Theses. 4615. 2017 https://digitalcommons.lsu.edu/gradschool_theses/4615

Talks

Using Computational Fluid Dynamics in Overtopping Analysis
July 2020, USACE Coastal Working Group Seminar, New Orleans District, LA, USA

Multiphase Flow Applications using Proteus
August 2018, CHL Research Forum Seminar, Coast Hydraulics Laboratory, Vicksburg, LA, USA

Quantifying Thin Mat Floating Marsh Strength and Interaction with Hydrodynamic Conditions
June 2016, State of the Coast, New Orleans, LA, USA

Posters

Haydel Collins, Maria Sklia, Max Agnew, David Fertitta, Aggelos Dimakopoulos, Matt Halso, Chris Kees
Applying a multi-scale decoupled modeling approach to evaluation of New Orleans flood defenses.
AGU Ocean Sciences 2020, San Diego, CA. February 16-20

Christopher E. Kees, Jason H. Collins, Tristan de Lataillade
Level Set Methods for Modeling Air-Water-Grain Interactions at the Microscale
AGU Fall Meeting 2019, San Francisco, CA. December 09-13

Jason Haydel Collins, Charles Sasser, Clint S Willson
Quantifying Thin Mat Floating Marsh Strength and Interaction with Hydrodynamic Conditions
AGU Fall Meeting 2016, San Francisco, CA. December 16

Jason Haydel Collins, Charles Sasser, Clint S Willson
Quantifying Thin Mat Floating Marsh Strength and Interaction with Hydrodynamic Conditions
LSU Graduate Research Conference, Louisiana State University, Baton Rouge, LA. February 2016

reports

South Central Coastal Louisiana Study; Hydraulics, Hydrology, & Climate Preparedness and Resilience. November 2019

Contact

• LinkedIn
• GitHub

Elements

i = 0;

while (!deck.isInOrder()) {
    print 'Iteration ' + i;
    deck.shuffle();
    i++;
}

print 'It took ' + i + ' iterations to sort the deck.';