Effect of Dimple Protrusion Shape on The Cooling Performance of The Turbine Blade Using CFD
Journal Title: International Journal of Trend in Scientific Research and Development - Year 2020, Vol 5, Issue 1
Abstract
It is well understood that one way to improve a gas turbine engines power output and thermodynamic performance is to increase the temperature of the turbine inlet TIT . The inlet temperature should be gradually elevated to higher targets to pursue greater control. However, with the rise in blade inlet temperature, the heat applied to the blade increases, and the permissible melting temperature of materials increases at a slower rate. This implies that the inlet temperature of the turbine blade will exceed the melting temperature of the material by more than 500 . Thus, cooling turbine blades for a safe and long lasting operation is important. To lower the temperature of the blade content below its melting point, different internal and external cooling techniques are employed. . In recent years, in the tip region of the turbine blade, multiple augmentation devices such as fins, ribs, pins, and dimples protrusions have gained a lot of attention to enhance heat transfer. With increasing inlet temperature of the turbine, pin fin arrays cannot satisfy the need of the cooling alone. To be paired with the pin fin arrays, several more methods are also added. With slight loss of pressure, dimples and protrusions are fine options. In this present work, the numerical approach is used to investigate the influence of dimples or protrusions shape on the cooling of the turbine blade. The ANSYS 17.0 simulation software was used. The results of this study show that the , due to flow acceleration, increase in impingement area and shrinkage of the flow recirculation region within the dimple, pin fin dimple wedge duct with triangular shape dimples protrusions provides improved heat transfer enhancement. Prof. Amol Kumar Tripathi | Neha Verma "Effect of Dimple/ Protrusion Shape on The Cooling Performance of The Turbine Blade Using CFD" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-1 , December 2020, URL: https://www.ijtsrd.com/papers/ijtsrd38000.pdf Paper URL : https://www.ijtsrd.com/engineering/mechanical-engineering/38000/effect-of-dimple-protrusion-shape-on-the-cooling-performance-of-the-turbine-blade-using-cfd/prof-amol-kumar-tripathi
Authors and Affiliations
Prof. Amol Kumar Tripathi | Neha Verma
Keywords
Related Articles
- EP ID EP692252
- DOI -
- Views 113
- Downloads 0
A Study on Patient Satisfaction towards Cancer Hospital
A cancer diagnosis places considerable stress on patients and their families. They find themselves discomfort with the strange health system making serious decisions with long term consequences living with uncertainness...
An Experimental Study on Properties of Concrete using RHA and RFA as a Partial Replacement of Fine Aggregate and Fly Ash as a Cement
Concrete is the most widely used construction material in the world it is a mixture of cement, sand, coarse aggregate and water. Storage and safe disposal of industrial byproduct such as fly ash and RHA and RFA is a huge...
A Study of Impact of Customer Satisfaction on Online Shopping
Customer satisfaction is considered important for online shopping. Researching what leads to customer satisfaction has become paramount for online businesses. Thus, the goal of this work was to identify the determinants...
IoT Based Industrial Information Gathering
This project aims to gather information from an industry by means of the internet of things (IOT). Internet of Things (IOT) is rapidly increasing technology. IOT is the network of physical objects or things embedded with...
Organizational Justice and Academic Staff Performance among Public and Private Tertiary Institutions in South South States of Nigeria
The organizational conflicts among employers and employees in tertiary institutions most especially public institutions has remained a recurring spike in Nigeria that undermine the overall performance of lecturers and st...