JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-Requisites

Low speed Aerodynamics

Course Objectives:

• To familiarize the learner with non-aeronautical uses of aerodynamics such as road vehicle, building aerodynamics and problems of flow induced vibrations.

Course Outcomes:

• Use of aerodynamics for non- aerodynamics such as vehicle, building
• Solve the problems and able to analyse vibrations during flow

UNIT - I

Atmosphere: Types of winds, Causes of variation of winds, Atmospheric boundary layer, Effect of terrain on gradient height, Structure of turbulent flows.

UNIT - II

Wind Energy Collectors: Horizontal axis and vertical axis machines, Power coefficient, Betz coefficient by momentum theory.

UNIT - III

Vehicle Aerodynamics: Power requirements and drag coefficients of automobiles, Effects of cut back angle, Aerodynamics of trains and Hovercraft.

UNIT - IV

Building Aerodynamics: Pressure distribution on low rise buildings, wind forces on buildings. Environmental winds in city blocks, Special problems of tall buildings, Building codes, Building ventilation and architectural aerodynamics.

UNIT - V

Flow Induced Vibrations: Effects of Reynolds number on wake formation of bluff shapes, Vortex induced vibrations, Galloping and stall flutter.

TEXT BOOKS:

• 1. M. Sovran (Ed), “Aerodynamics and drag mechanisms of bluff bodies and Road vehicles”, Plenum press, New York, 1978.
• 2. Sachs. P., “Winds forces in Engineering”, Pergamon Press, 1978.

REFERENCE BOOKS:

• 1. Blevins. R.D., “Flow Induced Vibrations”, Van Nostrand, 1990.
• 2. Calvent. N.G., “Wind Power Principles”, Charles Griffin & Co., London, 1979 .