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Abstract
Computational Fluid Dynamics (CFD) tools are extensively used by aircraft industries all over the world in design and development of airplanes, with emphasis on reducing both the cost and design cycle time. This paper deals with the use of CFD tools at Aeronautical Development Agency (ADA) in design and development of Indian combat aircraft. The applications include: (1) evaluation of incremental changes in aerodynamic configuration, (2) wave drag evaluation, (3) aerodynamic loads, (4) flow field around air data sensor locations, (5) Euler calculation for coupled internal and external flow field, and (6) viscous computation of high angles of attack flows. In the initial design phase, codes based on the potential theory were used for wing design and fuselage shape optimization. Later indigenously developed Euler and Navier-Stokes codes were employed for the various applications. This paper brings out the strength and weakness of CFD as experienced at ADA and its comparison with the Wind Tunnel and Flight Data.
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References
- Nandanan, M., "FETRAN - A Computational Fluid Dynamics Software for Analysis of Aircraft Configuration in Transonic Regime", ADA/LCA/010601/42, 1992.
- Koruthu, S. P., "Preliminary Validation of HYENA Euler Code (Version 1.0)", ADA/TD/CFD/TR/061, 1997.
- Koruthu, S. P., ADA/LCA/010601/090, 2001.
- Koruthu, S. P., ADA/LCA/010601/071, 1997.
- Mohan, S. R. and Koner, D., ADA/TD/WT/047, 2002.
- Jawahar, S., Personal Communication.
- Singh, K. P. et.al., "Application of an Euler Code on a Modern Combat Aircraft Configuration", Proceedings of 14th ICNFMD, Bangalore, July 1994, Springer-Verlag, pp 535-539.
- Davidson, D. and Chakraborthy, I., "Wind Tunnel Measurements of Local Flow Angularity and Static Pressure at Air Data Sensor Locations", ADA/TD/ WT/003, 1994.
- Singh, K. P. and Pai, T. G., "Local Flow Field at Air Data Sensor Location on LCA’, Journal of Aeronautical Society of India, Vol.35, No.2, pp.119-124, May 2002,
- Shyam Chetty., Personal Communication.
- Richard Amaladas., "3D Unstructured Grid Generation and Flow Solution for Euler Equations’, ADA/ TD/CFD/TR/103, 2002.
- Sandhya Jha., Valliammai, S., Richard Amaladas. and Biju Uthup., ADA/LCA/010601/105, June 2004.
- Jolly, R., HAL/ADB/ADA/010202/069, 1997.
- Satya Prakash., "Flow Computations with CNS3D: Validation for Standard Test Cases’, ADA/TD/CFD/ TR/119, November 2003.
- Satya Prakash., "Predictions of Viscous Flow with the Multi-block Implicit CNS3D Code’, ADA/TD/ CFD/TR/127, October 2004.
References
Nandanan, M., "FETRAN - A Computational Fluid Dynamics Software for Analysis of Aircraft Configuration in Transonic Regime", ADA/LCA/010601/42, 1992.
Koruthu, S. P., "Preliminary Validation of HYENA Euler Code (Version 1.0)", ADA/TD/CFD/TR/061, 1997.
Koruthu, S. P., ADA/LCA/010601/090, 2001.
Koruthu, S. P., ADA/LCA/010601/071, 1997.
Mohan, S. R. and Koner, D., ADA/TD/WT/047, 2002.
Jawahar, S., Personal Communication.
Singh, K. P. et.al., "Application of an Euler Code on a Modern Combat Aircraft Configuration", Proceedings of 14th ICNFMD, Bangalore, July 1994, Springer-Verlag, pp 535-539.
Davidson, D. and Chakraborthy, I., "Wind Tunnel Measurements of Local Flow Angularity and Static Pressure at Air Data Sensor Locations", ADA/TD/ WT/003, 1994.
Singh, K. P. and Pai, T. G., "Local Flow Field at Air Data Sensor Location on LCA’, Journal of Aeronautical Society of India, Vol.35, No.2, pp.119-124, May 2002,
Shyam Chetty., Personal Communication.
Richard Amaladas., "3D Unstructured Grid Generation and Flow Solution for Euler Equations’, ADA/ TD/CFD/TR/103, 2002.
Sandhya Jha., Valliammai, S., Richard Amaladas. and Biju Uthup., ADA/LCA/010601/105, June 2004.
Jolly, R., HAL/ADB/ADA/010202/069, 1997.
Satya Prakash., "Flow Computations with CNS3D: Validation for Standard Test Cases’, ADA/TD/CFD/ TR/119, November 2003.
Satya Prakash., "Predictions of Viscous Flow with the Multi-block Implicit CNS3D Code’, ADA/TD/ CFD/TR/127, October 2004.