Thermal design often begins with an inverse question: the outlet temperature is known, but the required equipment size is not. Other problems begin with a hot spot hidden by an acceptable average. These questions need different levels of modelling, even when they concern the same equipment.
Simple to use · Autonomous engineering engine
Your problem. One connected workflow.
State the temperature target, throughput and available cooling. SIA selects the relevant thermal models and coordinates the calculations so you can compare design choices without managing separate modelling tools.
Start in plain language. Add the drawings or data you have. SIA handles model selection and tool orchestration, asking for the physical inputs that materially affect the answer.
From your question to the decision
Size against the target
Start with energy balances and applicable convection models to estimate the length or area needed. Work backwards from the requirement rather than testing arbitrary dimensions.
Locate the controlling resistance
Separate fluid convection, solid conduction and contact resistance. Add spatial flow and temperature fields when local hot spots, maldistribution or geometry determine the result.
Compare the thermal and hydraulic trade-off
Increasing velocity can alter both heat transfer and pressure demand. Compare designs against throughput, temperature and the energy required to move the fluid, with consistent boundary conditions.
What changes the decision
Choose the level of detail that resolves the design decision: a bulk sizing question and a local hot-spot question are different investigations.