By combining a wavelet-based grid adaptation strategy with the Brinkman penalization technique an efficient numerical method to simulate turbulent flow past bluff bodies is obtained. The approach is very promising for the simulation of turbulent flows of scientific and engineering interest. To demonstrate the feasibility of the method some preliminary numerical experiments are conducted for flo...

Two formulas for Macdonald functions (which are a widely known in mathematics and applications particular case of cylinder functions) obtained by using some integral bilinear functionals defined on pair representation spaces or square these

The dependence of the intrinsic viscosity [η] on the weight average degree of polymerization Pw of chitosans in aqueous acid media is discussed in terms of the Yamakawa-Fujii theory for the worm-like cylinder model. The conformational characteristics (Kuhn statistical segment length and Flory characteristic ratio) are estimated. They increase linearly with the reciprocal of the square root of s...