(7)). In the calculation, a factor that considers the hood efficiency is also employed. The hood efficiency is not explicated because the ratio of convection load, temperature gradient in the room space, and the exact amount of the general exhaust are not determined. (7)qv=φ∑j(Pj⋅...
A single bypass ratio provides the highest thrust in the Turbo-bypass Engine across the entire range of Mach numbers. The Air Turboramjet seems capable of providing higher thrust than the Turbo-bypass Engine, but more detailed modeling is needed to fully understand its operation. The performance ...
A turbine flowmeter consists of a multibladed wheel mounted in a pipe along anaxis parallelto the direction of fluid flow in the pipe, as shown inFig. 16.10. The flow of fluid past the wheel causes it to rotate at a rate that is proportional to the volume flow rate of the fluid. Thi...
Turbine - Axial, Radial, Mixed-Flow: Francis turbines are probably used most extensively because of their wider range of suitable heads, characteristically from three to 600 metres. At the high-head range, the flow rate and the output must be large; othe
IGTC-18 An Experimental Investigation into Controlling the Secondary Flow in Turbine Cascades with Leaned Blades and Divergent Outer Wall(Session A-5 AEROD... Five groups of full annular turbine cascades with different divergent angles of outer walls and diameter-blade height ratio d/h=3 are te...
A detailed numerical study of the flow and the heat transfer inside high-pressure-ratio transonic/supersonic turbine blade rows is described. A high-order upwinding relaxation method is used to solve the Reynolds-averaged Navier-Stokes equation inside three different turbine blade rows. A two-equat...
Data are presented to allow performance estimation of actual machines over a wide range of Reynolds number, Mach number, aspect ratio and other relevant variables. The use of the method in connection with three-dimensional methods of flow estimation is considered, and data presented showing ...
Tip gap flow characteristics and aerodynamic loss generations in a turbine cascade equipped with pressure-side partial squealer rims have been investigated with the variation of its rim height-to-span ratio (hp/s) for a tip gap height of h/s=1.36%. The results show that the tip gap flow ...
The term Ω represents the effect of possible blunting of the velocity profile in the logarithmic or core regions of the flow (8)Ω=-2,5In(1-ξ)-2,5ξ(1+0,5ξ),ξ=τy/τw The area ratio σ is for a yield pseudoplastic fluid given as σ = 2(1 + ξ n)/(1 + n). S...
The debris accumulated in the trash rack needs to be removed regularly either manually or by some systematic mechanism, otherwise, they may cause some additional head losses. 6.4.4 Penstock design The penstock is used to drain the water from the source to the hydro turbine in the powerhouse. ...