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Nirmal Acharya

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Nirmal Acharya

Postdoctoral Fellow
Department of Energy and Process Engineering

nirmal.acharya@ntnu.no
Vannkraftlaboratoriet, Floor 5, 54, Gløshaugen, AlfredvGetz vei 4
Twitter ResearchGate
About Research Publications

About

Mechanical Engineer by profession focussed with research and development of hydraulic turbines and hydropower!

Competencies

  • Fluid mechanics
  • Hydropower
  • Renewable energy
  • Turbine
  • Turbomachinery

Research

DigiSur project aims to utilize the advances in digitization for optimizing the maintenance of Pelton runners and thereby reducing the need for larger refurbishments which is funded by HydroCen project.

  • Hydropower group

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2022

  • Acharya, Nirmal; Gautam, Saroj; Chitrakar, Sailesh; Dahlhaug, Ole Gunnar. (2022) Development of simplified model for prediction of sediment induced erosion in Francis turbine’s sidewall gaps . IOP Conference Series: Earth and Environmental Science (EES)
    Academic article
  • Acharya, Nirmal; Gautam, Saroj; Chitrakar, Sailesh; Trivedi, Chirag; Dahlhaug, Ole Gunnar. (2022) Application of hydro-abrasive erosion model from IEC 62364:2019 standard in Francis turbines. IOP Conference Series: Earth and Environmental Science (EES)
    Academic article
  • Gautam, Saroj; Acharya, Nirmal; Lama, Ram; Chitrakar, Sailesh; Neopane, Hari Prasad; Zhu, Baoshan. (2022) Numerical and experimental investigation of erosive wear in Francis runner blade optimized for sediment laden hydropower projects in Nepal. Sustainable Energy Technologies and Assessments
    Academic article

2021

  • Acharya, Nirmal; Gautam, Saroj; Chitrakar, Sailesh; Trivedi, Chirag; Dahlhaug, Ole Gunnar. (2021) Leakage Vortex Progression through a Guide Vane’s Clearance Gap and the Resulting Pressure Fluctuation in a Francis Turbine. Energies
    Academic article
  • Acharya, Nirmal; Trivedi, Chirag; Gautam, Saroj; Dahlhaug, Ole Gunnar. (2021) Investigation of sediment erosion phenomenon for different blade angle distribution in Francis runner. IOP Conference Series: Earth and Environmental Science (EES)
    Academic article

2020

  • Gautam, Saroj; Neopane, Hari Prasad; Acharya, Nirmal; Chitrakar, Sailesh; Thapa, Biraj Singh; Zhu, Baoshan. (2020) Sediment erosion in low specific speed Francis turbines: A case study on effects and causes. Wear
    Academic article

2019

  • Acharya, Nirmal; Trivedi, Chirag; Wahl, Nina Marie; Gautam, S; Chitrakar, Sailesh; Dahlhaug, Ole Gunnar. (2019) Numerical study of sediment erosion in guide vanes of a high head Francis turbine. Journal of Physics: Conference Series (JPCS)
    Academic article

Journal publications

  • Acharya, Nirmal; Gautam, Saroj; Chitrakar, Sailesh; Dahlhaug, Ole Gunnar. (2022) Development of simplified model for prediction of sediment induced erosion in Francis turbine’s sidewall gaps . IOP Conference Series: Earth and Environmental Science (EES)
    Academic article
  • Acharya, Nirmal; Gautam, Saroj; Chitrakar, Sailesh; Trivedi, Chirag; Dahlhaug, Ole Gunnar. (2022) Application of hydro-abrasive erosion model from IEC 62364:2019 standard in Francis turbines. IOP Conference Series: Earth and Environmental Science (EES)
    Academic article
  • Gautam, Saroj; Acharya, Nirmal; Lama, Ram; Chitrakar, Sailesh; Neopane, Hari Prasad; Zhu, Baoshan. (2022) Numerical and experimental investigation of erosive wear in Francis runner blade optimized for sediment laden hydropower projects in Nepal. Sustainable Energy Technologies and Assessments
    Academic article
  • Acharya, Nirmal; Gautam, Saroj; Chitrakar, Sailesh; Trivedi, Chirag; Dahlhaug, Ole Gunnar. (2021) Leakage Vortex Progression through a Guide Vane’s Clearance Gap and the Resulting Pressure Fluctuation in a Francis Turbine. Energies
    Academic article
  • Acharya, Nirmal; Trivedi, Chirag; Gautam, Saroj; Dahlhaug, Ole Gunnar. (2021) Investigation of sediment erosion phenomenon for different blade angle distribution in Francis runner. IOP Conference Series: Earth and Environmental Science (EES)
    Academic article
  • Gautam, Saroj; Neopane, Hari Prasad; Acharya, Nirmal; Chitrakar, Sailesh; Thapa, Biraj Singh; Zhu, Baoshan. (2020) Sediment erosion in low specific speed Francis turbines: A case study on effects and causes. Wear
    Academic article
  • Acharya, Nirmal; Trivedi, Chirag; Wahl, Nina Marie; Gautam, S; Chitrakar, Sailesh; Dahlhaug, Ole Gunnar. (2019) Numerical study of sediment erosion in guide vanes of a high head Francis turbine. Journal of Physics: Conference Series (JPCS)
    Academic article

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