Essays about: "upstream turbulence"

Showing result 1 - 5 of 10 essays containing the words upstream turbulence.

1. 1. Turbulence Intensity Measurements in a High-Pressure Gas Turbine Stage

   University essay from KTH/Kraft- och värmeteknologi

   Author : Ettore Scami; [2022]
   Keywords : Turbulence Intensity; turbine; stage efficiency; grid; turbomachinery; length scales;

   Abstract : This Thesis work focused on the acquisition and evaluation of data on mean velocity, turbulence intensity and length scales obtained via hot wire measurements in a high pressure single-stage land-based turbine available at the Department of Heat and Power Technology in KTH. Turbulence was generated by the use of grids and twoprobes, upstream and downstream of the turbine stage, were used. READ MORE

3. 2. The resilience of the food supply chain to pandemic COVID-19 : a case study on the impacts of the novel Corona in the grain industry of Swedish food supply chain

   University essay from SLU/Dept. of Economics

   Author : Hafiza Khandaker; [2021]
   Keywords : Corona pandemic; resilience; Lantmännen grain supply chain; flexibility adaptability; robustness; collaboration; supply chain risk management; vulnerability; business continuity; sustainable risk management culture;

   Abstract : Today’s business climate is subject to a variety of challenges associated with environmental turbulence that demands resilience to achieve sustainable business. The rare external disruption by a natural cause like a pandemic directly affects the organization’s ability to continue its operations from getting raw materials from suppliers to provide finished goods to market. READ MORE

4. 3. RANS & WMLES Simulations of Compressor Corner Separation

   University essay from KTH/Mekanik

   Author : Arthur Poulain; [2019]
   Keywords : Corner Separation; Compressor Linear Cascade; RANS; Wall-Modeled LES; Boundary Layer; Anisotropy; Hörnseparation; Kompressor Linjär Kaskad; RANS; Vägg-Modell LES; Gränsskikt; Anisotropi;

   Abstract : In axial compressor, corner separation phenomenon can occur between the blade surface and the hub. This leads to high total pressure losses, blockage and may worsen to surge. Various studies on NACA65-009 blade were previously performed experimentally and numerically to predict the corner separation. READ MORE

5. 4. Structural intrusion, flow disturbance and spillway capacity : CFD modeling of the Torpshammar dam

   University essay from Uppsala universitet/Elektricitetslära

   Author : Adéle Wallin; [2018]
   Keywords : RNG k-ε model; VOF; Fluent; turbulence; rectangular beams; flow pattern; discharge capacity; flow velocity;

   Abstract : At the Torpshammar dam two rectangular beams are situated upstream of the spillway gates to stabilize the sidewalls holding the embankment of the dam. A computational fluid dynamics (CFD) simulation of the dam with the bottom outlets open was made to investigate how the flow and discharge capacity is affected by the beams. READ MORE

6. 5. Effect of upstream turbulence on truck aerodynamics

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Zhivko Nikolov; [2017]
   Keywords : SCANIA; upstream turbulence; truck aerodynamics; Jakob Mann s method;

   Abstract : The aerodynamic team at SCANIA has discovered the need to investigate the effect of the upstream turbulence conditions on the aerodynamics of the trucks. This need comes from the fact that there are differences between the drag coefficients obtained using computational fluid dynamics (CFD) and the on-road measurements. READ MORE