Dr Ashish Vashishtha

PhD MTech BTech

Assistant Lecturer

806 Killeshin Building

e: ashish.vashishtha@itcarlow.ie      t: 059 9175000

ORCID ID: 0000-0002-8385-3740     ResearchGate

Dr Vashishtha recently joined Department of Aerospace Mechanical and Electronic Engineering at IT Carlow as Assistant Lecturer. He has worked as postdoc at NUI Galway for emission estimation in gas-turbine combustor as well as at Indian Institute of Sciences, India in the area of experimental and numerical hypersonic flows and combustion detonation. He received his PhD from the University of Tokyo JAPAN in experimental and numerical unsteady hypersonic flows. He has 4.75 years of industrial experience regarding numerical spray and combustion modelling in IC Engines. He completed his Bachelor and Master’s degrees in Aerospace Engineering at Indian Institute of Technology Kanpur, India with research in supersonic flows and high-speed jets.

  • Research Interests
  • Publications
  • Research Supervision
  • Engagement and Collaboration

Research Interests

Dr Vashishtha has a wide range of experience in industry and academia related to experimental and numerical fluid-thermodynamics applications, reactive flows etc. Currently, he is actively pursuing applied aspects of fluid and thermodynamics related to automotive, space and energy industries. His research interest can be summarized as follows:

  • High-Speed Flows: Experimental & Numerical
  • Flow Controls, Shock Waves, Unsteady Flow Analysis.
  • Reactive Flows, Combustion, Detonation, Emission Modelling, Hydrogen Energy
  • Instrumentation, 2-D and 3-D Unsteady Optical Flow Measurement Techniques, Data Driven Analysis Methods.

Publications

Peer Reviewed Journal Articles

Vashishtha A., Watanabe Y., Suzuki K., “Bow-Shock Instability and its Control in front of Hemispherical Concave Shell at Hypersonic Mach Number 7", Transactions of The Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol. 14, No. 30, pp 121-128 (2016).

Vashishtha A., Watanabe Y. Suzuki K., “Study of Shock Shape in front of Concave, Convex and Flat Arc in Hypersonic Flow", JAXA Special Publications Vol. 14 No.10 (JAXA-SP-14-010), pp. 127-132 (2015).

Vashishtha A., Rathakrishnan E., “Breathing Blunt Nose Concept for Drag Reduction in Supersonic Flow", Journal of Aerospace Engineering IMECH E Part G, Vol. 223, No.1 pp.31-38 (2009).

Sharma H., Vashishtha A., Rathakrishnan E., “Experimental Study of Overexpanded Co-flowing Jets", The Aeronautical Journal, Royal Aeronautical Society, Vol. 112, No. 1135 pp.537 - 546 (2008).

Sharma H., Vashishtha A., Rathakrishnan E., “Twin Vortex Flow Physics", Journal of Aerospace Engineering IMECH E Part G, Vol. 222, No.6, pp. 783-788 (2008).

Conference Proceedings and Papers

Snehal U.M., Vashishtha A., Jagadeesh G., “Experimental Study of Shock Instabilities over Spiked body in presence of Frontal Concave Cavity at Hypersonics", in Proceedings of 32nd International Symposium on Shock Waves, NUS, Singapore July. 14-19, 2019.

Vashishtha A., Srisha Rao M.V., “Numerical Study of Detonation Driven Miniature Shock Tubes using OpenFoam", in Proceedings of 5th National Symposium on Shock Waves, Feb. 25 - Feb. 28, 2018 at TBRL, Chandigarh, INDIA.

Vashishtha A., Watanabe Y., Suzuki K., “Study of Bow-Shock Instability in front of Hemispherical Shell at Hypersonic Mach Number 7", presented at 45th AIAA Fluid Dynamics Conference, AIAA-2015-2638.

Vashishtha A., Rathinam B., Delahaye L., Ravet F., Justet F., “Study of Intake Ports Design for Ultra Low Cost (ULC) Gasoline Engine using STAR-CD", SAE Tech. Paper 2012-01-0407.

Yedlapalli S., Vashishtha A., and Rathakrishnan E., “Base Pressure Control by using Ribs in Subsonic and Sonic Suddenly Expanded Flows", published in Proceedings of 2nd International Conference on Recent Advances in Experimental Fluid Mechanics (RAEFM), March 2008, KLCE, Vijaywada (A.P.).

Sharma H., Vashishtha A., Lovaraju P., Rathakrishnan E., “Characteristics of sonic and supersonic co-flowing jets", published in Proceedings of 2nd International Conference on Recent Advances in Experimental Fluid Mechanics (RAEFM), March 2008, KLCE, Vijaywada (A.P.).

Sharma H., Vashishtha A., Lovaraju P., Rathakrishnan E., “Effect of co-axial jet on the supersonic core of a Mach 2 jet", published in Proceedings of 34th National Conference on Fluid Mechanics and Fluid Power, FMFP 2007, BIT Mesra (Jharkhand).

Jain S., K. Sumeet, Sandeep MGR, Vashishtha A., Lovaraju P. and Rathakrishnan E., “Experimental Studies on High-Speed co-owing Jets", published in Proceedings of 34th National Conference on Fluid Mechanics and Fluid Power, FMFP 2007, BIT Mesra (Jharkhand).

Sharma H., Vashishtha A. and Rathakrishnan E., “Twin Vortex Flow Physics", published in Proceedings of 9th International Symposium on Fluid Control Measurement and Visualization, FLUCOME 2007, Tallahase, Florida, USA.

Dissertations:

Doctoral: Ashish Vashishtha, “Bow-Shock Instability and its Control in front of Concave shaped Blunt Nose at Hypersonic Mach No. 7", under supervision of Prof. Kojiro Suzuki, Department of Advanced Energy, The University of Tokyo, Kashiwa, JAPAN (September, 2016), U-Tokyo Repository, Thesis Number: 12601 A No. 33230 doi.org/10.15083/00075323

Masters: Ashish Vashishtha, Experimental Investigation of Drag Reduction using Breathing Blunt Nose in Supersonic Flow Regime”, under supervision of Prof. E. Rathakrishnan, Department of Aerospace Engineering, Indian Institute of Technology, Kanpur, INDIA (May, 2008).

Research Supervision

Current Research Students
  • Cathal Fagan: Design Study of Vertical Axis Wind Turbine (VAWT)
  • Erik Perse: Air-dampener Design Analysis for Bio-medical application
Areas of Interest for future supervisory role
  • Energy Systems, Fluid-Thermodynamics
  • High-speed Flows, Shockwaves (Experiments and Numerical)
  • Combustion / Detonation (Experimental and Numerical)
  • Hydrogen Energy
  • Applications of Shock-waves in Transdisciplinary applications: Materials, Bio-medical, micro-nano fluids etc.

Engagement and Collaboration

  • Member, American Institute of Aeronautics and Astronautics (AIAA)
  • Member, American Society of Mechanical Engineers (ASME)