websights

Latest Articles

lawson wind comfort criteria f

Lawson wind comfort criteria: LDDC, 2001, and the original compared

Full threshold tables for the general Lawson, Lawson LDDC and Lawson 2001 wind comfort criteria, plus which variant applies to your site and why.

Peter Selmeczy September 4, 2026
AEC, CFD
ashrae data center standards

How to design a data center cooling system for ASHRAE 90.4

ASHRAE 90.4-2025 explained: MLC and ELC limits, TC 9.9 temperature classes A1-A4 and H1, and how to verify data center cooling compliance with CFD before you build.

Peter Selmeczy September 1, 2026
AEC, CFD
indoor thermal standards featured

What Is ISO 7730? The Thermal Comfort Standard Explained

ISO 7730 sets the PMV and PPD method for thermal comfort. Its scope, the clause structure, what changed in the 2025 edition, and how it differs from ASHRAE 55.

Jon Wilde September 1, 2026
AEC, CFD
ashrae 55 featured v2

What Is ASHRAE 55? Basics of Thermal Comfort

ASHRAE 55-2023 sets the thermal comfort criteria for indoor spaces. Learn the six factors, the comfort zone, PMV and PPD limits, and how to prove compliance.

Jon Wilde August 30, 2026
AEC, CFD
Physics AI foundation models

Design of experiments in engineering: how to run simulation DoE at scale

Design of experiments in engineering: how to plan a simulation DoE, run hundreds of variants in parallel in the cloud, and read the results. Free to start.

Alex Graham August 29, 2026
CFD, Product
hvac duct design featured image

HVAC duct design software: how to size, simulate, and validate ductwork

Compare duct design software by category, from ductulators and Manual D tools to online CFD. See what each does, what free tools miss, and how to validate.

David Heiny August 28, 2026
AEC, CFD
wind loads on buildings analysis with SimScale CFD

Wind load analysis: how to calculate wind loads on a building

Calculate wind loads on buildings with the ASCE 7 and Eurocode procedures, a worked example, and CFD for shapes the code methods cannot cover.

Peter Selmeczy August 26, 2026
AEC, CFD
computational wind engineering simulation

Wind engineering: the discipline and what its guidelines prescribe

What wind engineering is, what a wind engineer does, and what COST 732 and the AIJ guidelines actually prescribe for CFD domain size, mesh and turbulence models.

Guillermo Giraldo August 25, 2026
AEC, CFD
building aerodynamics and pedestrian wind comfort blog

Wind effects around buildings: how to tell which one you have

The seven named wind effects around buildings, how to tell which one is causing a problem on your site, and how to read a wind rose and a comfort map.

Peter Selmeczy August 24, 2026
AEC, CFD

Get started today