*Research Scholar, RGPV Bhopal, M.P India

** Professor Mechanical Engineering Department, RGPV, Bhopal, MP India

***Professor Mechanical Engineering Department, JEC, Jabalpur MP India

Email:-shailesh.gupta@hcet.hitkarini.com

One of the traditional methods used to improve the efficiency of a gas turbine is to increase the inlet temperature; thereby increasing the power output and in turn, the efficiency. The problem associated with increasing the inlet temperature of a gas turbine is the failure of material due to excessive thermal stresses. This brings in the concept of cooling of turbine blades to incorporate the increase in the inlet temperature. Due to the complex flow through gas turbine blades, designers need data that will aid them in the development of efficient cooling designs. They need detailed hot gas path heat transfer and temperature distributions. They also need detailed flow and heat transfer data to understand the flow physics and to improve the current internal cooling designs. The use on an artificial roughness on leading and trailing walls of a gas turbine blade is an effective technique of internal cooling. A great number of experimental and numerical studies have been carried out to investigate the effects of ribs on heat transfer in internal channels. In this paper an attempt has been made to specifically reviewed the heat transfer enhancement by using V-Shaped artificial roughness in Gas turbine blade internal cooling. The published data of heat transfer and friction factor by various investigators have been reviewed and presented.