Experimental and numerical investigation on the flow and heat transfer behaviors during a compression–cooling–expansion cycle using a liquid piston for compressed air energy storage

In its 3rd revised and extended edition the book offers an overview of the techniques used to solve problems in fluid mechanics on computers and describes in detail those most often used in practice. Included are advanced methods in computational fluid dynamics, like direct and large-eddy simulation of turbulence, multigrid methods, parallel computing, moving grids, structured, block-structured and unstructured boundary-fitted grids, free surface flows. The 3rd edition contains a new section dealing with grid quality and an extended description of discretization methods. The book shows common roots and basic principles for many different methods. The book also contains a great deal of practical advice for code developers and users, it is designed to be equally useful to beginners and experts. The issues of numerical accuracy, estimation and reduction of numerical errors are dealt with in detail, with many examples. A full-feature user-friendly demo-version of a commercial CFD software has been added, which can be used to compute all flow examples from the book. All computer codes can be accessed from the publishers server on the internet Experimental and numerical investigation on the flow and heat transfer behaviors during a compression–cooling–expansion cycle using a liquid piston for compressed air energy storage Introduction Studied cycle and the LP column Compression–Cooling–Expansion (CCE) cycle Geometry and dimensions of the LP column Numerical and experimental methodologies Numerical model VOF method for air compression/expansion with heat transfer Simulation parameters Mesh convergence study Experimental setup and PIV method Experimental uncertainties Calculation of efficiencies Comparison between experimental and numerical results for model validation Average air pressure and temperature Comparison of local velocity field Flow and heat transfer characteristics during the CCE cycle Compression stage Isochoric cooling stage Expansion stage Effects of operation parameters Effect of wall temperature Effect of piston speed Conclusions and prospects CRediT authorship contribution statement Declaration of Competing Interest Data availability Acknowledgments Appendix A. Supplementary data References