Blar i NTNU Open på forfatter "Thapa, Bhola"
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Current research in hydraulic turbines against sediment erosion: International partnership and collaborations
Thapa, Biraj Singh; Thapa, Bhola; Dahlhaug, Ole Gunnar; Lee, Young Ho; Zhongdong, Qian (Peer reviewed; Journal article, 2021)The problem of material erosion in hydraulic machineries has been under the investigation since a century ago. However, the proper solutions to the erosion of hydro turbine due to sediment-laden flows has not been found ... -
Effects of sediment erosion in guide vanes of Francis turbines
Thapa, Biraj Singh (Doctoral theses at NTNU;2016:260, Doctoral thesis, 2016)Erosive wear of turbine components has been a major operational challenge for the runoff-river hydropower plants across the basins of Himalaya in Asia. The hard mineral particles, which are carried by rivers reach the ... -
Sand Erosion in Hydraulic Machinery
Thapa, Bhola (Doktoravhandlinger ved NTNU, 1503-8181; 2004:105, Doctoral thesis, 2004)The topic of this thesis is damage of hydraulic machinery due to sand erosion. This is a very broad topic in which all the aspects of design of hydraulic machinery namely material selection; mechanics of material and ... -
Velocity and pressure measurements in guide vane clearance gap of a low specific speed Francis turbine
Thapa, Biraj Singh; Dahlhaug, Ole Gunnar; Thapa, Bhola (Journal article; Peer reviewed, 2016)In Francis turbine, a small clearance gap between the guide vanes and the cover plates is usually required to pivot guide vanes as a part of governing system. Deflection of cover plates and erosion of mating surfaces causes ...