To overcome the difficulties in determining an inverse compressor function for a Gaussian source, which appear in designing the nonlinear optimal companding quantizers and also in the nonlinear optimal companding quantization procedure, in this paper a piecewise linear compressor function based on the first derivate approximation of the optimal compressor function is proposed. We show that the ...

Natural gas is often associated with nitrogen and heavy compounds. The Heavy components in the natural gas not only can feed downstream units, owing to the low temperature process may be formed solid as well. Therefore, heavy components separation can be a necessity and produce useful products. Virtually, all natural gases are containing nitrogen ​​that would lower the heating value of natural ...

Abstract The paper describes a method for optical measurement of oscillation blades in linear cascade designed flutter research. uses laser triangulation, which measures the distance between sensor and object. can be recalculated to angular displacement blade. However, relation is nonlinear due curvature dependence derived quantified analytically. further analyzes influence light refraction win...

Abstract Lattice Boltzmann simulations of corner separation flow in a compressor cascade are presented. The lattice approach is rather new the context turbomachinery, and configuration known to be particularly challenging for turbulence modeling. present methodology characterized by quasi-autonomous meshing strategy limited computational cost (a net ratio 5 compared previous finite-volume compr...