Question 1

2026

Accepted Answer

Abbishek Gururaj, Mahyar Moaven, James Buchholz, Brian Thurow, and Vrishank Raghav. "Uncoupling the effects of Euler and Coriolis acceleration on the transient dynamics over a rotating wing." Journal of Fluid Mechanics 1036 (2026): A28.

Shahan Muhammad Qamar, Abbishek Gururaj, Sarah Morris, and Vrishank Raghav. "Effect of pitch-rate and pitch pivot location on aerodynamic loads and flow structures of a rotating flat plate." Aerospace Science and Technology (2026): 111451.

Zachary Moore, Lokesh Silwal, Aditya Vijayaraj, and Vrishank Raghav. "Quantification of the Ground Effect on the Aerodynamic Interferences of a Coaxial Rotor System." Journal of the American Helicopter Society 71, no. 1 (2026): 1-13.

Will McAtee and Vrishank Raghav. "Secondary vorticity defines finite-edge effects in vortex ring collisions with plane walls." Journal of Fluid Mechanics 1028 (2026).

Question 2

2025

Accepted Answer

Holger Mettelsiefen, Sunetra Sarkar, Vrishank Raghav. "Investigating the significance of flatness defects in the origin of hysteresis in flag flutter." Journal of Fluid Mechanics 1021 (2025): A38.

Bibek Sapkota, Holger Mettelsiefen, Vrishank Raghav, Brian Thurow. "Three-dimensional fluid-structure interaction diagnostics using a single camera." Journal of Fluids and Structures 139 (2025): 104423.

Praveen Jawaharlal, Ehsan Taheri, Aditya Vijayaraj, Vrishank Raghav. "Development and Validation of a Cross-Over Control Algorithm for Counter-Rotating Multi-Rotor Systems." Aerospace Science and Technology (2025): 110997.

Abbishek Gururaj, Sarah Morris, Mahyar Moaven, Brian Thurow, and Vrishank Raghav. "Influence of Euler acceleration on the aerodynamic loading and leading-edge vortex dynamics over a rotating wing." Physical Review Fluids 10, no. 7 (2025): 074702.

Daniel Stubbs, Lokesh Silwal, Vikas Bhargav, Brian Thurow, Vrishank Raghav, and David Scarborough. "The Effect of Reduced Ambient Pressure on Plume-Surface Interaction Cratering Dynamics." AIAA Journal 63.3 (2025): 1062-1077

Question 3

2024

Accepted Answer

Mahyar Moaven, Abbishek Gururaj, Vrishank Raghav, and Brian Thurow. "Improving depth uncertainty in plenoptic camera-based velocimetry." Experiments in Fluids 65, no. 4 (2024): 1-26.

Colin Bamford, Paul Swiney, Jack Nix, Tyson L Hedrick, and Vrishank Raghav. "Aerodynamic response of a red-tailed hawk to discrete transverse gusts." Bioinspiration & Biomimetics 19, no. 3 (2024): 036011.

Lokesh Silwal, Vikas N. Bhargav, Daniel C. Stubbs, Brandon K. Fulone, Brian S. Thurow, David E. Scarborough, and Vrishank Raghav. "Ejecta behavior during plume-surface interactions under rarefied atmospheric conditions." Acta Astronautica 218 (2024): 35-46.

Vikas N. Bhargav, Nicola Francescato, Holger Mettelsiefen, Abdullah Y. Usmani, Stefania Scarsoglio, and Vrishank Raghav. "Spatio-temporal relationship between three-dimensional deformations of a collapsible tube and the downstream flowfield." Journal of Fluids and Structures 127 (2024): 104122.

Vahid Sadri, Prem A. Midha, Immanuel David Madukauwa-David, Norihiko Kamioka, Phillip M. Trusty, Priya J. Nair, Samuel Cohen, Vrishank Raghav, Rahul Sharma, Vasilis Babaliaros, Ajit P. Yoganathan. "Benchtop Flow Stasis Quantification: In Vitro Methods and In Vivo Possibilities." Cardiovascular Engineering and Technology (2024): 1-11.

Question 4

2023

Accepted Answer

Laine Alby, Ajay Jayswal, Sarah Morris, Will McAtee, Vrishank Raghav, and Sabit Adanur. "A novel face mask design with improved properties for COVID-19 prevention." Textile Research Journal (2023): 00405175221146295.

Bipin Tiwari, Abdullah Y. Usmani, Sandeep Bodduluri, Surya P. Bhatt, and Vrishank Raghav. "Influence of pulsatility and inflow waveform on tracheal airflow dynamics in healthy older adults." ASME Journal of Biomechanical Engineering 145, no. 10 (2023): 101009.

Question 5

2022

Accepted Answer

Sarah Morris, Will McAtee, Jesse Capecelatro, and Vrishank Raghav. "Influence of expiratory flow pulsatility on the effectiveness of a surgical mask." Journal Of Exposure Science And Environmental Epidemiology, 32(5), 697-705 (2022).

Stubbs, Daniel C., Lokesh Silwal, Brian S. Thurow, Masatoshi Hirabayashi, Vrishank Raghav, and David E. Scarborough. "Three-Dimensional Measurement of the Crater Formation During Plume–Surface Interactions Using Stereo-Photogrammetry." AIAA Journal (2021): 1-16.

Lokesh Silwal, Mahendra Bhagwat, and Vrishank Raghav. "Aerodynamic Interactions of Counter-Rotating Coaxial Rotors Hovering in Ground Effect." Journal of Aircraft 59.6 (2022): 1416-1425.

Question 6

2021

Accepted Answer

Kalvin Monroe, Yuan Yao, Aaron Lattanzi, Vrishank Raghav, and Jesse Capecelatro. "Role of pulsatility on particle dispersion in expiratory flows." Physics of Fluids 33, no. 4 (2021): 043311.
 
Zu Puayen Tan, Lokesh Silwal, Surya P. Bhatt, and Vrishank Raghav. "Experimental characterization of speech aerosol dispersion dynamics." Scientific reports 11, no. 1 (2021): 1-12.
 
Gururaj, Abbishek, Mahyar Moaven, Zu Puayen Tan, Brian Thurow, and Vrishank Raghav. "Rotating three-dimensional velocimetry." Experiments in Fluids 62, no. 7 (2021): 1-20.
 
Raghav, Vrishank, Prem Midha, Rahul Sharma, Vasilis Babaliaros, and Ajit Yoganathan. "Transcatheter aortic valve thrombosis: a review of potential mechanisms." Journal of the Royal Society Interface 18, no. 184 (2021): 20210599.

Question 7

2020

Accepted Answer

Immanuel David Madukauwa‐David, Vahid Sadri, Norihiko Kamioka, Prem A Midha, Vrishank Raghav, John N Oshinski, Rahul Sharma, Vasilis Babaliaros, Ajit P Yoganathan. "Transcatheter aortic valve deployment influences neo‐sinus thrombosis risk: An in vitro flow study" Catheterization and Cardiovascular Interventions (2019)
 
Vahid Sadri, Charles H Bloodworth, Immanuel David Madukauwa-David, Prem A Midha, Vrishank Raghav, Ajit P Yoganathan. "A mechanistic investigation of the EDWARDS INTUITY Elite valve’s hemodynamic performance" General Thoracic and Cardiovascular Surgery (2019): 1-9

Question 8

2019

Accepted Answer

Vrishank Raghav, Chris Clifford, Prem Midha, Ikechukwu Okafor, Brian Thurow, Ajit Yoganathan. "Three-dimensional Extent of Flow Stagnation in Transcatheter Heart Valves" Journal of the Royal Society Interface (2019). Featured on Journal Cover Page
 
Surya P Bhatt, Sandeep Bodduluri, Vrishank Raghav, Nirav R Bhakta, Carla G Wilson, Young-il Kim, Michael Eberlein, Frank C Sciurba, MeiLan K Han, Mark T Dransfield, Arie Nakhmani. "The Peak Index: Spirometry Metric for Airflow Obstruction Severity and Heterogeneity" Annals of the American Thoracic Society (2019): 1-15

Question 9

2018

Accepted Answer

Vrishank Raghav, Sudeep Sastry, and Neelakantan Saikrishnan. "Experimental Assessment of Flow Fields Associated with Heart Valve Prostheses Using Particle Image Velocimetry (PIV): Recommendations for Best Practices." Cardiovascular engineering and technology (2018): 1-15
 
Samantha Houser, Ikechukwu Okafor, Vrishank Raghav, and Ajit Yoganathan "Flow visualization of the non-parallel jet-vortex interaction." Journal of Visualization (2018): 1-10.
 
Michael Tree, Zhenglun Wei, Phillip Trusty, Vrishank Raghav, Mark Fogel, Kevin Maher, and Ajit Yoganathan "Using a Novel In Vitro Fontan Model and Condition-Specific Real-Time MRI Data to Examine Hemodynamic Effects of Respiration and Exercise." Annals of biomedical engineering 46.1 (2018): 135-147.

Question 10

2017

Accepted Answer

Prem Midha, Vrishank Raghav, Rahul Sharma, Jose Condado, Ikechukwu Okafor, Tanya Rami, Gautam Kumar, Vinod Thourani, Hasan Jilaihawi, Vasilis Babaliaros, Raj Makkar, and Ajit Yoganathan "The Fluid Mechanics of Transcatheter Heart Valve Leaflet Thrombosis in the Neo-Sinus." Circulation 137.17 (2017): 1598-1609
 
Vrishank Raghav, Alex J. Barker, Daniel Mangiameli, Lucia Mirabella, Michael Markl, and Ajit Yoganathan "Valve mediated hemodynamics and their association with distal ascending aortic diameter in bicuspid aortic valve subjects." Journal of Magnetic Resonance Imaging 47.1 (2017): 246-254.
 
Ikechukwu Okafor, Vrishank Raghav, Jose Condado, Prem Midha, Gautam Kumar, and Ajit P. Yoganathan "Aortic Regurgitation Generates a Kinematic Obstruction Which Hinders Left Ventricular Filling." Annals of biomedical engineering 45.5 (2017): 1305-1314.
 
Lakshmi Dasi, Hoda Hatoum, Arash Kheradvar, Ramin Zareian, Hamed Alavi, Wei Sun, Caitlin Martin, Thuy Pham, Qian Wang, Prem Midha, Vrishank Raghav, Ajit Yoganathan"On the mechanics of transcatheter aortic valve replacement." Annals of biomedical engineering 45.2 (2017): 310-331.
 
Prem Midha, Vrishank Raghav, Ikechukwu Okafor, and Ajit Yoganathan "The effect of valve-in-valve implantation height on sinus flow." Annals of biomedical engineering 45.2 (2017): 405-412.

Question 11

2016

Accepted Answer

Prem Midha, Vrishank Raghav, Jose Condado, Ikechukwu Okafor, Stamatios Lerakis, Vinod Thourani, Vasilis Babaliaros, and Ajit Yoganathan "Valve type, size, and deployment location affect hemodynamics in an in vitro valve-in-valve model." JACC: Cardiovascular Interventions 9.15 (2016): 1618-1628.
 
Vrishank Raghav, Ikechukwu Okafor, Michael Quach, Lynn Dang, Salvador Marquez, and Ajit Yoganathan "Long-term durability of Carpentier-Edwards Magna Ease valve: a one billion cycle in vitro study." The Annals of thoracic surgery 101.5 (2016): 1759-1765.
 
Ikechukwu Okafor, Vrishank Raghav, Prem Midha, Gautam Kumar, and Ajit Yoganathan "The hemodynamic effects of acute aortic regurgitation into a stiffened left ventricle resulting from chronic aortic stenosis." American Journal of Physiology-Heart and Circulatory Physiology 310.11 (2016): H1801-H1807.

Question 12

2015

Accepted Answer

Prem Midha, Vrishank Raghav, Jose Condado, Sivakkumar Arjunon, Domingo Uceda, Stamatios Lerakis, Vinod Thourani, Vasilis Babaliaros, and Ajit Yoganathan "How can we help a patient with a small failing bioprosthesis?: an in vitro case study." JACC: Cardiovascular Interventions 8.15 (2015): 2026-2033.
 
Ikechukwu Okafor, Arvind Santhanakrishnan, Vrishank Raghav, and Ajit Yoganathan "Role of mitral annulus diastolic geometry on intraventricular filling dynamics." Journal of biomechanical engineering 137.12 (2015): 121007.
 
Gautam Kumar, Vrishank Raghav, Stamatios Lerakis, and Ajit Yoganathan "High transcatheter valve replacement may reduce washout in the aortic sinuses: an in-vitro study." The Journal of heart valve disease 24.1 (2015): 22-29.
 
Vrishank Raghav and Narayanan Komerath. "Advance ratio effects on the flow structure and unsteadiness of the dynamic-stall vortex of a rotating blade in steady forward flight." Physics of Fluids 27.2 (2015): 027101.
 
Vrishank Raghav and Narayanan Komerath. "Dynamic Stall Life Cycle on a Rotating Blade in Steady Forward Flight." Journal of the American Helicopter Society 60.3 (2015): 1-12.
 
Michael Mayo, Vrishank Raghav, and Narayanan Komerath. "Vortex flow hypothesis for a yawed rotor blade in reverse flow." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 229.3 (2015): 543-553.

Question 13

2014

Accepted Answer

Vrishank Raghav, and Narayanan Komerath. "Velocity measurements on a retreating blade in dynamic stall." Experiments in fluids 55.2 (2014): 1669.
 
Vrishank Raghav, Michael Mayo, Rafael Lozano, and Narayanan Komerath "Evidence of vortex-induced lift on a yawed wing in reverse flow." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 228.11 (2014): 2130-2137

Question 14

2013

Accepted Answer

Vrishank Raghav and Narayanan Komerath. "Instability of the radial flow over a rotating disk in a separated edgewise stream." Physics of Fluids 25.11 (2013): 111701.
 
Sumant Sharma, Vrishank Raghav, Narayanan Komerath and Marilyn Smith "Wall effect on fluid–structure interactions of a tethered bluff body." Physics Letters A 377.34-36 (2013): 2079-2082
 
Vrishank Raghav, Rajiv Shenoy, Marilyn Smith and Narayanan Komerath "Investigation of drag and wake turbulence of a rotor hub." Aerospace Science and Technology 28.1 (2013): 164-175.
 
Vrishank Raghav and Narayanan Komerath. "An exploration of radial flow on a rotating blade in retreating blade stall." Journal of the American Helicopter Society 58.2 (2013): 1-10.

Applied Fluids Research Group

Department of Aerospace Engineering

Auburn University