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A periodic Kármán vortex street is formed when a uniform stream flows over...
Could you write down the answer legible please i cannot read most of the answer sheets....
Could you write down the answer legible please i cannot read
most of the answer sheets. Thank you in advance, professor.
Flow over a cylinder can generate a Karman Vortex street under certain conditions. By using Buckingham Pi theorem for the dimensional parameters given below, find a relation for the vortex shedding in terms of the nondimensional numbers that you determine. Dimensional Parameters: Vortex shedding frequency f Freestream velocity, V Fluid density, P Fluid viscosity u Cylinder diameter, D
6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river...
6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river current flows past it. These vortices can create damaging periodic forces so you want to do a scale model test in a water tunnel as part of the initial bridge design. A dimensional analysis on this phenomenon reveals the following Pi terms: where ω shedding frequency, V-fluid velocity, p-fluid density,μ fluid viscosity and D and H are as shown. For the specific...
a) Describe the following types of flow and give one example: i) Steady uniform flow (2...
a) Describe the following types of flow and give one example: i) Steady uniform flow (2 marks) i) Unsteady uniform flow (2 marks) i) Unsteady non-uniform flow (2 marks) b) The power input P to a centrifugal pump is assumed to be a function of the volume flow Q, impeller diameter D, rotational rate 0, and the density p and viscosity u of the fluid. By using 0, p and D as repeating variables, develop this as a dimensionless relationship....
4. Consider fully developed Couette flow-flow between two infinite parallel plates separated by distance h, with...
4. Consider fully developed Couette flow-flow between two infinite parallel plates separated by distance h, with the top plate moving and the bottom plate stationary. The flow is steady, incompressible, and two-dimensional in the xy- plane. Use the method of repeating variables to generate a dimensionless relationship for the x component of fluid velocity u as a function of fluid viscosity , top plate speed V, distance h, fluid density p, and distance y Show all your work. Hint: u...
b) The power input P to be a cerki fugal pump is assumed to be a...
b) The power input P to be a cerki fugal pump is assumed to be a function of the volume flow , impeller diometer D rotational rate , and the density and MJ CAST of the fluid. By using , and D as repeating von bles) develop this as a dimensionless relationship - d3 - A water solution entering the propeller in the pump produces thrust force, ft which is depending on the density, diameter ,d, the rotational speed, co...
The drag force Fp on a smooth sphere falling in water depends on the sphere speed...
The drag force Fp on a smooth sphere falling in water depends on
the sphere speed V, the sphere density P. the density p and dynamic
viscosity of water, the sphere diameter Dand the gravitational
acceleration g. Using dimensional analysis with p. V and D as
repeating variables, determine suitable dimensionless groups to
obtain a reneral relationship between the drag force and the other
variables. If the same sphere were to fall through air, determine
the ratio of the drag...
3. Flows ove result in the formation of vortices in the downstream wake. These structures are...
3. Flows ove result in the formation of vortices in the downstream wake. These structures are shed much like that which is seen for circular cylinders and the frequency of shedding is important in the understanding of the flow field. This is particularly important for micro UAV's as they affect the flight characteristics of these small vehicles. To determine the shedding frequency, f, of the wake, researchers decide to run a model test with a 1/10 scale model wing in...
When small aerosol particles or microorganism move through air or water, the Reynolds number is very...
When small aerosol particles or microorganism move through air or water, the Reynolds number is very small (Re << 1). Such flows are called creeping flows. The aerodynamic drag force, Fp, on an object in creeping flow is a function only of its speed V, some characteristic length scale L of the object, and fluid viscosity u (see Fig. 4). Use the method of repeating variables to generate a relationship for Fp as a function of the independent variables. Draw...
asap please, will rate! 4. When small aerosol particles or microorganism move through air or water,...
asap please, will rate!
4. When small aerosol particles or microorganism move through air or water, the Reynolds number is very small (Re << 1). Such flows are called creeping flows. The aerodynamic drag force, FD, on an object in creeping flow is a function only of its speed V, some characteristic length scale L of the object, and fluid viscosity u (see Fig. 4). Use the method of repeating variables to generate a relationship for Fp as a function...
B2 The University has decided to commission a large iconic sculpture which is to be erected in place of the old library. The structure is intended to acknowledge the industrial heritage of the region...
B2 The University has decided to commission a large iconic sculpture which is to be erected in place of the old library. The structure is intended to acknowledge the industrial heritage of the region whilst at the same time linking to the University's motto "Per Ardua Ad Alta" (through efforts to high things"). An (unimaginative) artist is suggesting that a large circular chimney (diameter D, height h) should be built using the bricks from the old library. Concern has been...
Could you write down the answer legible please i cannot read
most of the answer sheets. Thank you in advance, professor.
Flow over a cylinder can generate a Karman Vortex street under certain conditions. By using Buckingham Pi theorem for the dimensional parameters given below, find a relation for the vortex shedding in terms of the nondimensional numbers that you determine. Dimensional Parameters: Vortex shedding frequency f Freestream velocity, V Fluid density, P Fluid viscosity u Cylinder diameter, D
6. (3 pts.) A long submerged support leg of a bridge will experience vortex shedding when a river current flows past it. These vortices can create damaging periodic forces so you want to do a scale model test in a water tunnel as part of the initial bridge design. A dimensional analysis on this phenomenon reveals the following Pi terms: where ω shedding frequency, V-fluid velocity, p-fluid density,μ fluid viscosity and D and H are as shown. For the specific...
a) Describe the following types of flow and give one example: i) Steady uniform flow (2 marks) i) Unsteady uniform flow (2 marks) i) Unsteady non-uniform flow (2 marks) b) The power input P to a centrifugal pump is assumed to be a function of the volume flow Q, impeller diameter D, rotational rate 0, and the density p and viscosity u of the fluid. By using 0, p and D as repeating variables, develop this as a dimensionless relationship....
4. Consider fully developed Couette flow-flow between two infinite parallel plates separated by distance h, with the top plate moving and the bottom plate stationary. The flow is steady, incompressible, and two-dimensional in the xy- plane. Use the method of repeating variables to generate a dimensionless relationship for the x component of fluid velocity u as a function of fluid viscosity , top plate speed V, distance h, fluid density p, and distance y Show all your work. Hint: u...
b) The power input P to be a cerki fugal pump is assumed to be a function of the volume flow , impeller diometer D rotational rate , and the density and MJ CAST of the fluid. By using , and D as repeating von bles) develop this as a dimensionless relationship - d3 - A water solution entering the propeller in the pump produces thrust force, ft which is depending on the density, diameter ,d, the rotational speed, co...
The drag force Fp on a smooth sphere falling in water depends on
the sphere speed V, the sphere density P. the density p and dynamic
viscosity of water, the sphere diameter Dand the gravitational
acceleration g. Using dimensional analysis with p. V and D as
repeating variables, determine suitable dimensionless groups to
obtain a reneral relationship between the drag force and the other
variables. If the same sphere were to fall through air, determine
the ratio of the drag...
3. Flows ove result in the formation of vortices in the downstream wake. These structures are shed much like that which is seen for circular cylinders and the frequency of shedding is important in the understanding of the flow field. This is particularly important for micro UAV's as they affect the flight characteristics of these small vehicles. To determine the shedding frequency, f, of the wake, researchers decide to run a model test with a 1/10 scale model wing in...
When small aerosol particles or microorganism move through air or water, the Reynolds number is very small (Re << 1). Such flows are called creeping flows. The aerodynamic drag force, Fp, on an object in creeping flow is a function only of its speed V, some characteristic length scale L of the object, and fluid viscosity u (see Fig. 4). Use the method of repeating variables to generate a relationship for Fp as a function of the independent variables. Draw...
asap please, will rate!
4. When small aerosol particles or microorganism move through air or water, the Reynolds number is very small (Re << 1). Such flows are called creeping flows. The aerodynamic drag force, FD, on an object in creeping flow is a function only of its speed V, some characteristic length scale L of the object, and fluid viscosity u (see Fig. 4). Use the method of repeating variables to generate a relationship for Fp as a function...
B2 The University has decided to commission a large iconic sculpture which is to be erected in place of the old library. The structure is intended to acknowledge the industrial heritage of the region whilst at the same time linking to the University's motto "Per Ardua Ad Alta" (through efforts to high things"). An (unimaginative) artist is suggesting that a large circular chimney (diameter D, height h) should be built using the bricks from the old library. Concern has been...
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