RESEARCH

Research Interests:

Coastal/Ocean Engineering & Environmental Fluid Mechanics:
Wave breaking processes; Wave-structure interactions; Wave overtopping; Renewable energy; Turbulent transport processes; Turbulent jet flows; Open channel hydraulics; Scour

Experimental Techniques:  
Non-intrusive quantitative velocity and scalar measurement techniques: image based velocimetry such as particle image velocimetry (PIV), bubble image velocimetry (BIV), and laser-induced fluorescence (LIF)
Fiber-optic based flow measurement techniques: fiber-optic reflectometry (FOR)

Computational Fluid Mechanics: 
Boundary integral equation method solving potential flows; Meshless method solving potential and viscous flows; Reynolds averaged Navier-Stokes equations with k-
e turbulence closure model solving turbulent flows

Current Research Projects:

Building Capacities to Withstand Extreme Coastal Wave Forces
Sponsor: Texas A&M Engineering Program and Pontificia Universidad Catolica De Chile
Investigators: K.-A. Chang, J. Kaihatu, R. Cienfuegos (Pontificia Universidad Católica de Chile)
Student Investigator: TBD

Study of Wetland Erosion due to Storms through Combined Field, Laboratory, and Numerical Investigations
Sponsor: National Oceanic and Atmospheric Administration - Sea Grant College Program
Investigators: K.-A. Chang, J. Kaihatu, R. Feagin
Student Investigator: Jin Young Kim (Ph.D.) and Shih-Heng Sun (M.S.)

Development of Synergetic/mobile Multi-source Multi-purpose Ocean Renewable Energy Station
Sponsor: TAMU Energy Institute
Investigators: M.H. Kim, K.-A. Chang, J. Kaihatu, J. Kameoka
Student Investigator: C.-H. Chien (M.S.)

Implementation of Bubble Image Velocimetry in OTRC Wave Basin
Sponsor: Industry Consortium
Investigator: K.-A. Chang
Student Investigators: W.-L. Chuang (Ph.D.), Y.K. Song (Ph.D.), and K. Ariyarathne (Ph.D.)

Large-Scale Laboratory Observations of Multiphase Flows under Surf-Zone Breaking Waves
Sponsor: National Cheng Kung University (Taiwan)
Investigators: K.-A. Chang, Z.-C. Huang (National Central University, Taiwan), Y.-Y. Chen and W.-Y. Hsu (National Cheng Kung University)
Student Investigators: B. Na (Ph.D.), W.-L. Chuang (Ph.D.)

Oil‐Droplet Sizing and Velocity Determination Using Fiber Optic Reflectometer
Investigator: K.-A. Chang
Student Investigators: W.-L. Chuang (Ph.D.), Y.-H. Chang (M.E.)

Breaking Wave Interactions with a Deck Structure
Sponsor: National Science Council (Taiwan)
Investigators: K.-A. Chang and A. Torres-Freyermuth (UNAM, Mexico)
Student Investigator: Y.-T. Wu (Visiting Ph.D. student from National Cheng Kung University)

Experimental Study of Wave Breaking in Deep Water
Investigators: K.-A. Chang and Z.-C. Huang (National Central University, Taiwan)
Student Investigators: B. Na (Ph.D.) and H.J. Lim (Ph.D.)

Recently Completed Research Projects:

Fish Larvae Recruitment to Texas Bays Through Aransas Pass
Sponsor: National Oceanic and Atmospheric Administration - Sea Grant College Program
Investigators: S. Socolofsky and K.-A. Chang
Student Investigator: K. Whilden (Ph.D.)

Flow Characteristics of Hydraulic Jump and Free Overfall
Sponsor: Ministry of Transportation and Communications, Taiwan
Investigators: K.-A. Chang and C. Lin (National Chung Hsing University, Taiwan)
Student Investigators: T.-C. Ho (Ph.D. at NCHU) and S.-C. Hsieh (Ph.D. at NCHU)

Buoyant Jet Diffusion and Dispersion in Wave Environment
Sponsor: National Science Council, Taiwan
Investigators: K.-A. Chang & S.C. Hsiao (National Cheng Kung University, Taiwan)
Student Investigator: J.F. Lin (Ph.D. at NCKU)

Field and Numerical Investigation of Tidal Vortices for Exchange Flows through Inlets on the Texas Coast
Sponsor: National Oceanic and Atmospheric Administration - Sea Grant College Program
Investigators: S. Socolofsky, K.-A. Chang, P. Lynett, and J. Irish
Student Investigators: K. Whilden (M.S.) and D. H. Kim (Ph.D.)

Loads due to Extreme Wave Crests
Sponsor: Department of Interior - Minerals Management Service and Various Industry Sponsors
Investigators: K.-A. Chang, H.-C. Chen and R. S. Mercier
Student Investigators: K. Ariyarathne (Ph.D.), A. Antoine (M.S.), Y. Ryu (Ph.D.), and K. Yu (Ph.D.)

Realtime Monitoring of Scour Events Using GPS Technology
Sponsor: Texas Department of Transportation
Investigators: J.-L. Briaud, K.-A. Chang, and S. Hurlebaus
Student Investigator: H. Nouri (Ph.D.), O.-Y. Yu (Ph.D.), C. Yao (Ph.D.), C. Darby (M.S.)

Perforated Breakwater: Energy Dissipation and Scalar Exchange
Sponsor: Korea Science and Engineering Foundation
Investigators: K.-A. Chang and J.-I. Lee (Korea Institute of Construction Technology)
Student Investigator: K. Ariyarathne (M.S.), Y. Ryu (KICT)

Site Specific Wave Parameters for Texas Coastal Bridges
Sponsor: Texas Department of Transportation
Investigators: J. Jin, V. Panchang, K.-A. Chang, B. Edge, J. Irish
Student Investigator: K. Song (M.S.)

Abutment Scour in Cohesive Materials
Sponsor: National Academy of Sciences - National Cooperative Highway Research Program
Investigators: J.-L. Briaud, H.-C. Chen, and K.-A. Chang
Student Investigators: X. Chen (Ph.D.), S. J. Oh (Ph.D.), and B. Devadason (M.S.)

Establish Guidance for Soils Properties-Based Prediction of Meander Migration Rate
Sponsor: Texas Department of Transportation
Investigators: J.-L. Briaud, H.-C. Chen, and K.-A. Chang
Student Investigators: P. Yeh (Ph.D.), N. Park (Ph.D.), and W. Wang (Ph.D.)

Laboratory Investigation of Sea Chest Discharge from CVN on Benthic Sediments
Sponsor: U.S. Navy - Naval Surface Warfare Center
Investigators: B. L. Edge, K.-A. Chang, and R. Randall
Student Investigators: P. Yeh (Ph.D.) and J. Henriksen (Ph.D.)

Laboratory Studies of Exchange Processes through Tidal Inlets on the Texas Coast
Sponsor: National Oceanic and Atmospheric Administration - Sea Grant College Program
Investigators: S. Socolofsky, K.-A. Chang, and P. Lynett
Student Investigators: F. Roure (M.S.), D. H. Kim (Ph.D.), and L. Augustin (M.S.)

Jet Diffusion and Dispersion in Wave Environment
Investigators: K.-A. Chang and N. Mori (Osaka City University, Japan)
Student Investigators: Y. Ryu (M.S./Ph.D.) and A. Chellappan (M.E.)

Mitigating Greenwater Damage Through Design
Sponsor: Department of Interior - Minerals Management Service and Various Industry Sponsors
Investigators: K.-A. Chang, H.-C. Chen and R. S. Mercier
Student Investigators: Y. Ryu (Ph.D.) and K. Yu (Ph.D.)

MRI: Acquisition of a Directional Random Wave Generator for the Coastal Engineering Laboratory Wave Basin
Sponsor: National Science Foundation
Investigators: B. L. Edge, K.-A. Chang, P. Lynett, and D. S. Sherman

Stability Analysis of Small Pontoon-Based Platforms at High Sea States
Sponsor: U.S. Navy - Naval Facilities Engineering Service Center
Investigators: H.-C. Chen and K.-A. Chang
Student Investigator: K. H. Jung (Ph.D./Postdoc)