Design of Nozzles for Supersonic Gas Injector Prototype
| Author(s) | : | Hitesh Chandani, Samiran Shanti Mukherjee, Ranjana Gangradey, Harish S. Choksi |
| Institution | : | ME (Jet propulsion & Gas Turbine plant) student, Mechanical department, MSU-Baroda, Gujarat |
| Published In | : | Vol. 4, Issue 6 — June 2017 |
| Page No. | : | 564-571 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Supersonic Gas Injection (SGI) is an efficient and economical method than conventional Gas puffing andcomplex Pellet injection methods for a small and medium sized tokamaks. To test SGI there is a need to develop a smallscaled prototype where we can study the behaviour of this technique. In this paper SGI prototype is designed forhydrogen gas flow rate of 2.57E+21 molecules per pulse. This pulse flow, ranges from 2 ms to 6 ms time is analysed inthe vacuum test chamber. Various Convergent-Divergent (CD) supersonic conical nozzles were studied and analysedwith different divergence angles (70, 120and 150) to know the best suitable dimensions of nozzle for different testconditions and specified flow parameters. The observed flow velocities are in the range of 350 m/s to 2250 m/s andmaximum Mach no. 2.7 can be reached in the test chamber of SGI prototype. The flow properties like Temperature,Velocity, Pressure, Density and Mach number (M) varies with position and flow time in the test chamber and for thatanalysis comparative results are presented in this paper.
Hitesh Chandani, Samiran Shanti Mukherjee, Ranjana Gangradey, Harish S. Choksi, “Design of Nozzles for Supersonic Gas Injector Prototype”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 6, pp. 564-571, June 2017.
