Homework Answers
The coefficient of pressure using the newtonian theory is estimated for Mach Number of 20 as a function of θ. The coefficient of drag or wave drag can then be obtained once coefficient of pressure is known as a function of theta.
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1- Hypersonic flow at M.=20, a = 0º pass over a sphere-cylinder body shown in the...
1- Hypersonic flow at Moo=20, a = 0º pass over a sphere-cylinder body shown in the...
1- Hypersonic flow at Moo=20, a = 0º pass over a sphere-cylinder body shown in the following figure. Calculate wave drag coefficient of the body using modified Newtonian method. R R M = 20 L
Gas dynamics, fluid mechanics and Aerodynamics Hypersonic flow at M..=20, a = 0º pass over a...
Gas dynamics, fluid mechanics and
Aerodynamics
Hypersonic flow at M..=20, a = 0º pass over a sphere-cylinder body shown in the following figure. Calculate wave drag coefficient of the body using modified Newtonian method. R R M. = 20 L
1. Inviscid incompressible fluid pass a cylinder having a radius of R as shown in the...
1. Inviscid incompressible fluid pass a cylinder having a radius of R as shown in the figure below. The fluid velocity along the dividing streamline is found to be V = V, (1-R /x) a) Determine the pressure gradient (ap/ ôx) along the streamline b) Obtain the pressure p(x) for - sxs-R c) Plot the pressure distribution froma distance 15 m ahead of the cylinder to the stagnation point for flow speeds of Vo 0, 10 km/hr and 20 km/hr...
QUESTION 3 (14 marks) Variation in drag cylinder is shown in Figure 2 (a) At point coefficient (C...
QUESTION 3 (14 marks) Variation in drag cylinder is shown in Figure 2 (a) At point coefficient (CD) against Reynolds number (Re) for flow around a smooth a, point out whether drag is mainly contributed by pressure drag or friction (8 marks) drag, and explain the reason why (6 marks) (b) Explain the reason why there is a sudden drop in Co at point 400 200 100 40 20 10 60 N C, 6 Smoath cylinder 0.6 0.4 0.2 0.1...
please help Question 1 1.1 If the velocity distribution of a fluid flowing over a 1m²...
please help
Question 1 1.1 If the velocity distribution of a fluid flowing over a 1m² flat plate is given by u=l+ y + y, find the m. Assume dynamic viscosity to be y=6x10*(Ns/m”). force acting on a plate at y = [5 marks] 1.2 A 2D velocity field in an incompressible flow was measured by PIV method and determined to follow the following functions u= 2x’ +2y and v=x - 4y. Check whether your measurements are correct at a...
2. Consider an incompressible flow around a semi-cylinder as shown in figure 3. Assume the velocity...
2. Consider an incompressible flow around a semi-cylinder as shown in figure 3. Assume the velocity distribution for the windward surface of the cylinder is given by the inviscid solution V- 2Unsinθ ee-Calculate the lift and drag coefficient if the base pressure (the pressure on the flat. or leeward, surface) is equal to the pressure at the separation point, Pcorner Pcorner Phase Pcorner Uan
Question 5:A double wedge-shaped body is placed in a M-1.9 flow as shown in the figure...
Question 5:A double wedge-shaped body is placed in a M-1.9 flow as shown in the figure below. If the stagnation pressure is equal to 13x10 N/m2, determine a) the lift and drag forces on the body per meter length, b) the lift-drag ratio, c) and the lift and drag coefficients. Po113 x 10° N/m? 0-1m
QUESTION 2 In an experiment to measure approaching uniform flow, U.to a non-rotating circular cylinder as...
QUESTION 2 In an experiment to measure approaching uniform flow, U.to a non-rotating circular cylinder as shown in Figure Q2, a small hole is to be drilled at the stagnation point on the cylinder surface. (a) Determine the location of the drilled hole on the cylinder surface using potential flow theory by combining a doublet with a uniform flow. (3.5 marks) (b) Determine the theoretical pressure distribution expression on the cylinder surface, Pc and plot or sketch a graph of...
1. Water flows over a cylinder perpendicular to its axis (in cross flow) at 3 m/s....
1. Water flows over a cylinder perpendicular to its axis (in cross flow) at 3 m/s. The water is at 300 K and the cylinder surface is at 350 K. The cylinder diameter is 50 mm. 1. Identify the characteristic length 2. The temperature at which properties must be evaluated 3. Calculate the Reynolds number 4. Identify the Nusselt correlations for this problem 5. Calculate the average convective heat transfer coefficient
could you please make clear answer? 5. Flow over a Bod;y (a) The drag coefficient for...
could you please make clear answer?
5. Flow over a Bod;y (a) The drag coefficient for a smooth sphere is shown in the figure below. Determine the speed at the critical Re for a 42 mm diameter sphere in air. (This is a golf ball sized object.) You may assume air at 60°F. 0.5 0.4 0.3 0.2 0.1 4 105 Re-Du/v 103 106 107 (b) Ģolthal, "dimples" cause the drag drop to occur at a lower Reynolds number. The table...
1- Hypersonic flow at Moo=20, a = 0º pass over a sphere-cylinder body shown in the following figure. Calculate wave drag coefficient of the body using modified Newtonian method. R R M = 20 L
Gas dynamics, fluid mechanics and
Aerodynamics
Hypersonic flow at M..=20, a = 0º pass over a sphere-cylinder body shown in the following figure. Calculate wave drag coefficient of the body using modified Newtonian method. R R M. = 20 L
1. Inviscid incompressible fluid pass a cylinder having a radius of R as shown in the figure below. The fluid velocity along the dividing streamline is found to be V = V, (1-R /x) a) Determine the pressure gradient (ap/ ôx) along the streamline b) Obtain the pressure p(x) for - sxs-R c) Plot the pressure distribution froma distance 15 m ahead of the cylinder to the stagnation point for flow speeds of Vo 0, 10 km/hr and 20 km/hr...
QUESTION 3 (14 marks) Variation in drag cylinder is shown in Figure 2 (a) At point coefficient (CD) against Reynolds number (Re) for flow around a smooth a, point out whether drag is mainly contributed by pressure drag or friction (8 marks) drag, and explain the reason why (6 marks) (b) Explain the reason why there is a sudden drop in Co at point 400 200 100 40 20 10 60 N C, 6 Smoath cylinder 0.6 0.4 0.2 0.1...
please help
Question 1 1.1 If the velocity distribution of a fluid flowing over a 1m² flat plate is given by u=l+ y + y, find the m. Assume dynamic viscosity to be y=6x10*(Ns/m”). force acting on a plate at y = [5 marks] 1.2 A 2D velocity field in an incompressible flow was measured by PIV method and determined to follow the following functions u= 2x’ +2y and v=x - 4y. Check whether your measurements are correct at a...
2. Consider an incompressible flow around a semi-cylinder as shown in figure 3. Assume the velocity distribution for the windward surface of the cylinder is given by the inviscid solution V- 2Unsinθ ee-Calculate the lift and drag coefficient if the base pressure (the pressure on the flat. or leeward, surface) is equal to the pressure at the separation point, Pcorner Pcorner Phase Pcorner Uan
Question 5:A double wedge-shaped body is placed in a M-1.9 flow as shown in the figure below. If the stagnation pressure is equal to 13x10 N/m2, determine a) the lift and drag forces on the body per meter length, b) the lift-drag ratio, c) and the lift and drag coefficients. Po113 x 10° N/m? 0-1m
QUESTION 2 In an experiment to measure approaching uniform flow, U.to a non-rotating circular cylinder as shown in Figure Q2, a small hole is to be drilled at the stagnation point on the cylinder surface. (a) Determine the location of the drilled hole on the cylinder surface using potential flow theory by combining a doublet with a uniform flow. (3.5 marks) (b) Determine the theoretical pressure distribution expression on the cylinder surface, Pc and plot or sketch a graph of...
1. Water flows over a cylinder perpendicular to its axis (in cross flow) at 3 m/s. The water is at 300 K and the cylinder surface is at 350 K. The cylinder diameter is 50 mm. 1. Identify the characteristic length 2. The temperature at which properties must be evaluated 3. Calculate the Reynolds number 4. Identify the Nusselt correlations for this problem 5. Calculate the average convective heat transfer coefficient
could you please make clear answer?
5. Flow over a Bod;y (a) The drag coefficient for a smooth sphere is shown in the figure below. Determine the speed at the critical Re for a 42 mm diameter sphere in air. (This is a golf ball sized object.) You may assume air at 60°F. 0.5 0.4 0.3 0.2 0.1 4 105 Re-Du/v 103 106 107 (b) Ģolthal, "dimples" cause the drag drop to occur at a lower Reynolds number. The table...
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