Fluid-analysis software lets engineers see inside products to spot and solve troublesome flow problems. CFD or computational-fluid dynamics was once the realm solely of PhDs and aerospace companies.

SAE Transactions, Vol. 112, Section 3: JOURNAL OF ENGINES (2003), pp. 1694-1706 (13 pages) In modern DI Diesel engines the raw emissions of NOx and soot are affected, apart from the fuel injection ...