Lecture #6 Ehsan Roohi Sharif University of Technology Aerospace Engineering Department 1

2 Wind Tunnel Pressure Coefficient

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7 The kinetic energy per unit volume is called dynamic pressure q The pressure energy per unit volume (due to random motion within the fluid) is the static pressure of the fluid and is given the symbol p The constant energy per unit volume is called the total pressure pt. Bernoulli's equation reduces to Dynamic pressure + Static pressure = Total pressure (7) For rotational flow the total pressure pt is constant along a streamline but may vary from streamline to streamline. HW: Read wiki page about Bernoulli equation and write a 2 pages report about different versions of this equation.

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10 Wind Tunnel

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17 C p depends on Reynolds Number and body shape

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19 Boundary Conditions

20 HW’s Chapter 3: P. 1-7 In four weeks