CAE and CFD

Apply Fourier’s law to calculate one-dimensional conduction through a planar solid.

Calculate the equivalent thermal resistance of a multilayer wall.

Calculate the temperature drop caused by thermal contact resistance.

Estimate spreading resistance from a small heat source into a larger plate using a supplied correlation.

Determine the Biot number for an electronics component or enclosure wall.

Assess whether a body can be represented by a lumped thermal-capacitance model.

Estimate warm-up time using the lumped-capacitance method.

Select defensible thermophysical properties from material data for a stated temperature range.

Calculate convective heat transfer using Newton’s law of cooling.

Distinguish natural, forced, and mixed convection from the mechanism driving the flow.

Calculate the Reynolds number for an internal or external airflow.

Interpret the Prandtl number for air at electronics-cooling temperatures.

Calculate the Rayleigh number for a heated surface or enclosed air region.

Classify a natural-convection regime using Rayleigh number and geometry.

Estimate a natural-convection coefficient using an appropriate supplied correlation.

Explain how buoyant recirculation transports heat inside a sealed enclosure.

Interpret emissivity data for common electronics and enclosure surfaces.

Calculate radiation exchange between a small diffuse-gray surface and large surroundings.

Calculate a view factor for a simple enclosure geometry.

Calculate radiation exchange between two diffuse-gray surfaces using a supplied view factor.

Compare radiative and convective heat-transfer rates for an enclosure surface.

Determine when surface-to-surface radiation is appropriate for an electronics model.

Estimate how a change in surface emissivity affects enclosure temperature.

Formulate a conservation balance over a finite control volume.

Identify the physical terms in the continuity equation for enclosure airflow.

Identify the forces and transport terms in the momentum equation for buoyant airflow.

Identify the storage, convection, diffusion, and source terms in the energy equation.

Explain how the finite-volume method converts conservation equations into algebraic equations.

Compare first-order and second-order spatial discretization schemes.

Explain the purpose of pressure–velocity coupling in an incompressible flow solver.

Distinguish residual convergence, monitor convergence, verification, and validation.

Translate a junction-to-ambient thermal path into solid and fluid simulation domains.

Choose between an external convection boundary condition and an explicitly modeled external-air domain.

Select a suitable geometric fidelity for PCB components based on the simulation objective.

Remove simulation-irrelevant geometric details without breaking important heat paths.

Repair gaps and overlaps that prevent creation of a watertight enclosure model.

Extract the sealed internal-air volume in Ansys geometry tools.

Create shared topology or explicit interfaces between contacting simulation domains.

Create named selections that support an auditable Fluent setup.

Identify regions where temperature or velocity gradients require mesh refinement.

Set global and local mesh sizes from geometric scales and expected gradients.

Resolve narrow air gaps without creating avoidable cell-quality problems.

Construct inflation layers for wall-bounded heat transfer.

Choose between conformal and non-conformal interfaces for adjacent zones.

Evaluate skewness, orthogonal quality, and aspect ratio against solver-appropriate criteria.

Correct a local mesh-quality problem using targeted geometry or sizing changes.

Design a three-level mesh-refinement study.

Select a pressure-based solver formulation for low-speed electronics cooling.

Choose between steady and transient formulations for a stated thermal objective.

Enable the energy model and gravitational acceleration with a consistent coordinate system.

Create fluid and solid materials with appropriate thermophysical properties.

Assign fluid zones, solid zones, and volumetric heat sources.

Apply thermal boundary conditions representing the enclosure’s external environment.

Configure coupled heat transfer across solid–fluid interfaces.

Initialize a conjugate heat-transfer solution from physically reasonable values.

Select between the Boussinesq and ideal-gas density models for a stated temperature range.

Set the operating density, reference temperature, and operating pressure consistently for buoyant flow.

Select a laminar or turbulence treatment using Rayleigh number and enclosure geometry.

Configure a laminar natural-convection calculation in Fluent.

Select a turbulence model when the estimated enclosure flow requires one.

Configure the surface-to-surface radiation model and surface emissivities.

Determine when an apparently unsteady buoyant flow requires transient simulation.

Diagnose a nonphysical buoyancy direction or temperature field from setup evidence.

Convert a component power list into consistent volumetric or surface heat-source inputs.

Calculate effective through-plane thermal conductivity for a layered PCB stack.

Estimate effective in-plane PCB conductivity from copper coverage.

Configure orthotropic PCB conductivity in Fluent.

Represent a via array using an equivalent thermal-conductivity model.

Represent a thermal interface material using thickness and conductivity data.

Select a block, detailed, or compact thermal representation for an electronic component.

Estimate junction temperature from a resolved case or board temperature using a supplied compact thermal resistance.

Create report definitions for key temperatures and heat-transfer rates.

Diagnose solution convergence using residual histories and monitored physical quantities.

Correct a slow or divergent solution through controlled changes to numerical settings.

Verify global energy conservation in a converged enclosure model.

Demonstrate mesh independence using results from three systematically refined meshes.

Compare predicted overall thermal resistance with a hand calculation or correlation.

Extract peak and area-weighted temperatures without introducing reporting artifacts.

Interpret temperature, heat-flux, velocity, and streamline plots to locate thermal bottlenecks.

Establish the baseline component thermal margins for a PCB in a sealed enclosure.

Evaluate how component placement changes the peak component temperature.

Evaluate how enclosure material or wall thickness changes junction-to-ambient performance.

Evaluate an internal heat spreader or chassis-conduction path as a design alternative.

Evaluate how enclosure-surface emissivity changes operating temperatures.

Quantify the sensitivity of peak temperature to uncertain power, contact, property, and ambient inputs.

Create a validation plan with measurable boundary conditions and temperature locations.

Recommend a design using thermal margin, sensitivity, validation evidence, and stated model limitations.