In this paper flow field calculations for an entire two shaft industrial gas turbine will be described. This method is based on individual through flow codes for axial compressors and air-cooled expansion turbines developed by the authors which are automatically coupled using simple combustion and secondary flow models connecting compressor and turbine flow paths. With this approach the complete quasi 3-D flow field from compressor inlet to turbine exit can be solved simultaneously (flange-to-flange). Details are explained in this paper. The through-flow computation for the analysis of cooled axial multistage turbines is fed by air from the compressor bleeds which are part of the through flow model of the compressor. The through-flow methods are based on a stream function approach and a finite element solution procedure. They include high-fidelity loss and deviation models with improved correlations. Advanced radial mixing and endwall boundary layer models are applied to simulate 3-D flow effects. For air-cooled turbine analysis, various types of cooling air injection were encompassed: film cooling, trailing edge injection and disc/endwall coolant flow. Compressor and turbine flow path computations were extensively validated individually and published by the authors. Predicted gas turbine operating points of MAN's MGT-gas turbine will be compared with results of the 3-D Navier-Stokes solver TBLOCK which was run for both compressor and turbines individually using the boundary conditions derived from the present analysis. The focus is on the comparison of mean data and radial distributions at inlet and outlet stations as well as planes between individual stages and blade rows. They will be compared with measured data at MAN's gas turbine test rig which were obtained in the turn of a prototype telemetry test campaign. It will be demonstrated that the new method presented is an essential and quick tool for overall gas turbine design and matching of the gas turbine components. NOMENCLATURE

Our beloved country, Egypt, is drowning in the swamps of problems which are called Egyptian grand challenges that prevent it from entering the race among the developed countries. These grand challenges range from improving uses of alternative energy, arid areas, over population, etc. improving uses of alternative energy is the scoop of this research. There are many types of alternative energy but, this research focus on hydroelectricity especially, water turbines. Water turbines are generating electricity by converting mechanical energy into electricity. In this research, the purpose is studying the factors that effect on the efficiency of water turbines by using the relation between cross-section area and velocity. And also, by using the relation between velocity and power which is cubic relationship and surely the relation between pressure and height. By looking on prior researches trying to know more about hydroelectricity and solving many problems such as water demand and low dissolved oxygen levels in the water. These problems can be solved by using the same idea of the dams but, use sea water which storage in a big tank. And knew about V-shape of the dams or water turbines. Scientific laws and methods have been used trying to increase the efficiency of water turbines. Concluding that increasing the cross-section area in front of blades to increase the pressure on them. And decreasing the cross-section area that distal to the area that in front of the turbine to increase the velocity and increasing electricity power output. The purpose of this research has been achieved and many problems have been solved from prior researches.