Essays about: "turbine internal cooling"

Showing result 1 - 5 of 8 essays containing the words turbine internal cooling.

1. 1. Investigation of Roughness Effects on Heat Transfer of Upscaled Additively Manufactured Channels in the Turbulent Region Using Infrared Thermography

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Kaibin Wen; [2023]
   Keywords : Investigation of Roughness Effects on Heat Transfer of Upscaled Additively Manufactured Channels in the Turbulent Region Using Infrared Thermography; Additiv tillverkning; värmeöverföring; infraröd termografi; ytjämnhet; finita elementmetoden;

   Abstract : Additive manufacturing (AM) has largely improved design freedom compared with traditional manufacturing processes such as casting and milling. The layer-by-layer workflow makes it possible to produce objects with much more complex shapes and structures. READ MORE

3. 2. Experimental pressure loss analysis in a mini tube for a fully developed turbulent airflow. : Mini channels of lengths 22.5 mm to 150 mm in length with a constant diameter of 1.5 mm

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Soumen Ghosh; [2022]
   Keywords : Experimental fluid mechanics; Pressure drop; friction factor; Internal flow; fully developed flow; turbulent flow; Fluid mechanics; Ideal gas; Moody s chart; Additive manufacturing; compressible flow; turbine blade cooling; mini channel;

   Abstract : The cooling systems in a gas turbine are especially important as the turbine blades and vanes are exposed to extreme temperatures. The relatively cool air is extracted from the compressors and fed to the turbines to cool the turbine blades. READ MORE

4. 3. Investigation Of The Influence Of Geometrical Parameters On Heat Transfer In Matrix Cooling : A Computational Fluid Dynamics Approach

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Fabian Maletzke; [2021]
   Keywords : turbine; blade cooling; matrix cooling; latticework cooling; CFD; heat transfer; RANS;

   Abstract : Modern gas turbine blades and vanes are operated at temperatures above their material’s melting point. Active external and internal cooling are therefore necessary to reach acceptable lifetimes. One possible internal cooling method is called matrix cooling, where a matrix of intersecting cooling air channels is integrated into a blade or vane. READ MORE

5. 4. Pressure loss characterization for cooling and secondary air system components in gas turbines

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Frida Isaksson; [2017]
   Keywords : Gas turbines; cooling and secondary air system; pressure losses; discharge coefficient; minor loss; one-dimensional modelling;

   Abstract : There is a constant struggle to increase the efficiency in gas turbines, where one method is to have a higher inlet temperature to the turbine. Often, this results in temperatures higher than the critical temperature of the materials, which makes cooling of the components an important part of the turbine. READ MORE

6. 5. Method Development for Heat Transfer Predictions in Channel Flows : An efficient CFD approach for ribbed stationary channels

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Martin Leskovec; [2016]
   Keywords : CFD; roughened channels; heat transfer coefficient; HTC; Nu number; CAE process;

   Abstract : Gas turbines are today used in numerous industrial and aeronautical applications. To increase the specific power output and efficiency, a high turbine inlet gas temperature is desired. The high temperature leads to the need of cooling critical components in the hot gas path. READ MORE