> > Verification Cases for Thermal Analyses—Creo Simulation Live

Verification Cases for Thermal Analyses—Creo Simulation Live
Heat Transfer in a Composite Wall
Problem Statement: A furnace wall consists of two layers: fire brick and insulating brick. The temperature inside the furnace is 3000 F (Tf​) and the inner surface convection coefficient is 3.333 x 10​-3 ​BTU/s ft​2 ​ F (hf​).
The ambient temperature is 80 F (Ta​) and the outer surface convection coefficient is 5.556 x 10​-4 BTU/s ft2 F (h​a). Find the temperature distribution in the composite wall.
1. Inner Layer:
Film coefficient: 3.333 x 10​-3 BTU/s (ft2)(F)
Ambient temperature (temperature inside the furnace): 3000 F
2. Outer Layer:
Film coefficient: 5.556 x 10​-4 BTU/s ft2 (F).
Ambient temperature: 80 F
 Material Properties Geometric Properties Fire brick: k = 2.222 x 10-4​ BTU/s ft FInsulation: k = 2.778 x 10-5BTU/s ft F Cross-section = 1 in x 1 inFire brick thickness = 9 inInsulating wall thickness = 5 in
Result Comparison—Simulation quality slider at default position
 Results Target Creo Simulate ANSYS Discovery Live Creo Simulation Live Percent Error Minimum Temperature (F) 336 336.64 341.63 341.6 1.67 Maximum Temperature (F) 2957 2597.17 2956.5 2956.5 0.02
Conduction in a Composite Solid Block
Problem Statement: Consider heat conduction in a wall formed as a composite of two materials. Material 1 has a uniform heat generation source equal to 6000 Watts applied to the outer surface, while Material 2 has an outer surface exposed to convective cooling. Compute the temperature of the adiabatic surface on the left-hand side of the domain.
References: F.P. Incropera, D.P. Dewitt. Fundamentals of Heat and Mass Transfer. 5th Edition, pg.117, 2006.
 Material Properties Geometric Properties Loading Material 1: Conductivity = 75 W/m-KMaterial 2: Conductivity = 150 W/m-K Dimensions of the block:70 mm X 80 mmMaterial 1= 50 mmMaterial 2 = 20 mmThickness = 1000 mm Left surface: Heat flow = 6000 WRight surface: HTC = 1000 W/m2 K and fluid bulk temperature = 30 CAll other surfaces are adiabatic.
Result Comparison—Simulation quality slider at default position
 Results Target Creo Simulate ANSYS Discovery Live Creo Simulation Live Percent Error Temperature of the adiabatic surface on extreme left side, in degree C 165 165 164.2 164.2 0.48
Heat Transfer from a Cooling Spine
Problem Statement: A steel cooling spine of cross-sectional area A and length L extend from a wall that is maintained at temperature T w . The surface convection coefficient between the spine and the surrounding air is h, the air temperature is T a , and the tip of the spine is insulated. Find the heat conducted by the spine and the temperature of the tip.
Convection conditions are applied to all 4 longitudinal surfaces.
References: F. Kreith, "Principles of Heat Transfer", 2nd Printing, International Textbook Co.,Scranton, PA, 1959, pg. 143, ex. 4-5
 Material Properties Geometric Properties Loading K = 9.71x10-3​BTU/s-ft-F Cross section = 1.2 in x 1.2 inL = 8 in T w = 100 FT a = 0 FH = 2.778x10-4 BTU/s-ft2-F
Result Comparison—Simulation quality slider at default position
 Results Target Creo Simulate ANSYS Discovery Live Creo Simulation Live Percent Error Temperature of Tip, in degree F 79.0344 78.96 79.22 79.5 0.59