Embedded Files
FLOW SIMULATION
FLOW SIMULATION
BALL VALVE WITH Y CONNECTION
BALL VALVE WITH Y CONNECTION
This project was to simulate water flow through a pipe with a partially opened valve leading to a y-connector. Although the part was symmetrical, because of the position of the valve, the water flow at the y intersection was not equally distributed. It is seen that a larger amount of water is favoring the right hand side pipe at the y-connector. Figures showing the 3D flow streamlines through the pipe as well as 2D contours of velocity and pressure are shown.
Mesh of the ball valve assembly
Pressure (banded) distribution plot at slice plane ZX plane located at y = 0 m
Velocity (banded) distribution plot at slice plane ZX plane located at y = 0 m.
Stream line plot of ball valve assembly banded-colored by velocity variable – NOT colored by TIME
the pressure drop between: -Inlet and Outlet1: 13860 Pa -Inlet and Outlet2: 13860 Pa
From the result that we got the mass flow at the inlet equal to the sum of the mass flow at outlet 1 and outlet 2 therefore the mass continuity equation is satisfied. The maximum velocity is next the valve because the fluid pass through a small section. Moreover, the fluid pressure drops 13860 Pa between inlet and both outlet.
Conjugate Heat Transfer Analysis of Cross Flow Heat Exchanger
Conjugate Heat Transfer Analysis of Cross Flow Heat Exchanger
A Heat Exchanger shown on the right is subjected to the cross flow of two fluids of different temperatures as shown below. Due to fluid flow, the heat exchanger is also subjected to the fluid temperature.
Section View
Heat Exchanger
Temperature contour on midsection of fluid domain
Temperature Contour on MidPlane
Velocity Contour on Mid-plane.
Total Pressure Contour on MidPlane.
Temperature Contour at Air Outlet
Streamline with air inlet and water inlet as seed location
Displacement magnitude contour
Equivalent stress contour
The Heat Exchange efficiency:
The Factor of Safety based on computed equivalent stress:
The heat Exchange is safe to use and no failure will occur
MISSILE PROJECTILE COMPRRESSIBLE FLOW
MISSILE PROJECTILE COMPRRESSIBLE FLOW
Analyze the compressible flow over a missile projectile for supersonic flow regime using the thermal template in ANSYS AIM. The speed of sound at sea level and 14.85 C is 1,255 km/h.
Missile
the mesh of the projectile, for entire domain
the mesh of the projectile, near the missile showing the inflation
the Solution Monitor convergence plot
Mach number banded colors contour on symmetry plane 1
Pressure banded colors contour on symmetry plane 1
Drag force
Temperature number banded colors contour on symmetry plane 1
One-Way Fluid Structure Interaction for Flow Over a Probe
One-Way Fluid Structure Interaction for Flow Over a Probe
A probe made of steel is subjected to a high flow air velocity at a 200 m/s. Perform FSI (Fluid Structure Interaction) to determine how the flow will affect the probe structurally.
the probe
Figure of the Flow mesh
Velocity contours plot on plane of symmetry – banded colors
Pressure contours plot on plane of symmetry – banded colors
Displacement Magnitude Contour Plot (banded)
Von Mises Stress or Equivalent Stress Contour Plot (banded)
The max displacement of 2.259E-07 m occurs on the bottom cylindrical surface of the probe.
The equivalent stress is 2.89E+6 Pa and located upper part of the probe. From material properties The tensile yield strength of structural steel is 2.5E+08 Pa. The Factor of safety can be computed as follow
The factor of safety is very high, which indicates that the probe will NOT fail
SIMULATING FLOW IN A STATIC MIXER
SIMULATING FLOW IN A STATIC MIXER
A static mixer consisting of two inlet pipes delivering water into a mixing vessel; the water exits through an outlet pipe. A general workflow is established for analyzing the flow of fluid into and out of a mixer.
Water enters through both pipes at the same rate but at different temperatures. The first entry is at a rate of 2 m/s and a temperature of 357 k and the second entry is at a rate of 2 m/s at a temperature of 285 K . The radius of the mixer is 2 m.
The goal is to determine the speed and temperature of the water when it exits the static mixer.
The mesh of the static mixer
Velocity vector on slice plane.
Temperature contour on slice plane located at 1 m from ZX Plane (Slice plane colored by temperature variable)
Temperature contour at outlet
Stream line plot of static mixer colored by temperature variable
Stream line plot of static mixer colored by velocity variable.
Stream line plot of static mixer colored by pressure variable
Calculated max Pressure at Outlet.
Calculated average Temperature at Outlet.
Calculated average Velocity at Outlet.
After running the fluid flow analysis on the extended static mixer, the conditions of the outlet were found. At the outlet, the speed was found to be 4.9723 m/s, the temperature of the water was found to be 330 K and the maximum pressure was found to be 7320.2 Pa. Both inlets entered with a velocity of 2 m/s, mixed with each other, then exited through one exit. This caused the fluid in this mixer to exit at a faster speed. Since one inlet entered as a hot liquid and the other entered as a cold liquid, the exiting liquid exited at a temperature between these values.
STRUCTURAL ANALYSIS
STRUCTURAL ANALYSIS
SPUR GEAR TOOTH STRENGTH
SPUR GEAR TOOTH STRENGTH
ANSYS can be used for simulations that involve contact between two or more parts such as between gear teeth. For this simulation, the gear on the left had an applied clockwise moment while the inner cylindrical face of the right gear was fixed. For this particular simulation, the calculated factor of safety was below 1 so it would have to be redesigned or given more appropriate loading conditions to be safe to use.
Figure of Mesh
Displacement Magnitude Contour Plot (banded).
Equivalent Stress Contour Plot (banded) in the area of gear tooth engagement
Von Mises Stress or Equivalent Stress Contour Plot (banded).
Factor of safety:
The results showed that the factor of safety is less than 1 therefore this assembly of gear will fail under this condition, to avoid that we have to increase the number of gear tooth or change the type of material with to higher tensile yield strength material or make the gears much thicker
Thermal Analysis
Thermal Analysis
HEAT LOSS THROUGH AN INSULATED PIPE
HEAT LOSS THROUGH AN INSULATED PIPE
Mesh plot
Heat Flux contour plot of steam pipe assembly
Temperature contour plot scoped to steam pipe (cast iron)
Temperature contour plot of steam pipe assembly
Temperature contour plot scoped to insulator (glass wool)
The theoretical temperature drop in insulator is 70 degree higher than the value given by ANSYS AIM moreover, the theoretical temperature drops in the pipe is small than the value given by ANSYS AIM.
Hyperelastic Material
Hyperelastic Material
Fatigue Analysis of a Ride-on Suspension
Fatigue Analysis of a Ride-on Suspension
Support and Loads
The simplified model of ride-on suspension made of structural steel usually seen in playground is shown below. The weight of the horse is 10 lbs. A child weighing 50 pounds is standing evenly on the foot holder.
Displacement Magnitude Contour Plot (banded).
Von Mises Stress or Equivalent Stress Contour Plot (banded)
Fatigue Life Contour Plot (banded)
Fatigue Damage Contour Plot (banded)
Safety Factor Contour Plot (banded)
The factor of safety is less than one therefore the Ride-on Suspension is not safe to use
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