Dr. Mohammad Rahiminejad

Profile

Dr. Mohammad Rahiminejad Wissenschftlicher Mitarbeiter

  • Contact hours Monday
    Tuesday
    Wednesday
    Thursday
    Friday
  • Address Berner Fachhochschule
    School of Architecture, Wood and Civil Engineering
    Bereich FDW
    Solothurnstrasse 102
    2500 Biel

Activities

  • Fluid Mechanics and Heat Transfer Analysis

  • Computational Fluid Dynamic Simulations (CFD)

  • Building Physics Simulations and Measurements

  • Performance Analysis of the Building Wall Assemblies with Traditional and Modern Solar BIPV Façades

Teaching

Research

  • Computational Fluid Dynamics (CFD) simulations, Building Physics analysis, Performance of building walls with traditional and modern solar BIPV façades, Ventilation systems design in underground tunnels, Bio-fluid mechanics, Nano materials

CV

  • Mohammad Rahiminejad is working at the BFH as a Research Associate to address the fluid mechanics/building physics problems raised in various industrial projects using an interdisciplinary approach by undertaking numerical analyses, CFD simulations, and experimental measurements.
    Mohammad holds a Ph.D. in Mechanics from EPFL. He has a multidisciplinary background ranging in various fields including Sustainable Energy Performance of Buildings, Ventilation in Underground Tunnels and Subway Platforms, Nanofluid materials, and Bio-fluid mechanics.
    In his Ph.D. thesis, he investigated the impact of the ventilated air-space behind traditional and BIPV façades on the thermo-hydrodynamic performance of building wall structures.
    Before starting his Ph.D., he worked on research/industrial projects to apprise decisions on the design of air conditioning systems in underground intercity/subway tunnels and platforms using CFD simulations.
    He has also worked on a research project in his Master's thesis on water purification through graphene membrane using Molecular Dynamics (MD) simulations.
    During his Bachelor's degree, for the first time, he worked on a novel research question to address the aerodynamic analysis of airflow in the human upper airway during sneezing using CFD simulations.
  • 2018-2022 Doctoral Assistant École polytechnique fédérale de Lausanne (EPFL)
  • 2015-2018 Project Manager Assistant Shiraz University/ Shiraz Metro Co./ Tehran-Shomal Freeway Co.
  • 2016-2017 Mechanical Engineer Mitrasun Solar Energy Systems Design Co.
  • 2015-2016 Co-founder Koosha Sanaat Rayeen Co.
  • 2018-2022 Doctoral of Philosophy (Ph.D.) École polytechnique fédérale de Lausanne (EPFL)/Doctoral Program in Mechanics
  • 2013-2015 Master of Science Sharif University of Technology/School of Mechanical Engineering
  • 2009-2013 Bachelor of Science Shiraz University/School of Mechanical Engineering
  • Invited by scientific journals for critical reviewing of papers:
    - Building and Environment
    - International Journal of Energy Research
    - Journal of Building Physics
    - journal of Architectural Engineering
    - Biomechanics and Modeling in Mechanobiology
  • Solar System Design Certification from ITVTO (Iran Technical & Vocational Training Organization)

Projects

  • Experimental study of hydrodynamic and thermal performance of ventilated wall structures, Full-year measuring campaign, Field study measurements in the Controlled Environments for Living Lab Studies (CELLS) in the Smart Living Lab, Fribourg, Switzerland

  • Detailed U-value analysis of a building prototype according to the criteria established by ISO 6946, ISO 9869, ASTM 1363, and SIA 180, Field study measurements in the Controlled Environments for Living Lab Studies (CELLS) in the Smart Living Lab, Fribourg, Switzerland

  • The impact of wall structure on the transient thermal response of the building envelopes in the EPFL campus

  • Assessment of thermal and electrical performance of BIPV façades using simplified simulations

  • ASHRAE 1759-RP: Impact of airflow on the thermal performance of air-spaces behind claddings, Sponsored by the TC 4.4 committee «Building Materials and Building Envelope» of ASHRAE

  • Modification of the ASTM C1363-19 test method to incorporate and study air-flow effects and to propose changes, fill in the gap, and to inform the treatment of ventilated air-spaces in applicable test standards, e.g., C1363-19, the ASHRAE HOF, and the ASHRAE Standard 90.1.

  • Effects of a Building Integrated Photovoltaic system on the thermal performances of a ventilated building envelope

  • Review and performance analysis of the new generation of ventilated building facades with integrated photovoltaics

  • Thermal performance of solar cells

  • Ventilated building skins; Review and performance evaluation

  • Develop a three-dimensional model for a full length subway platform under real operative conditions

  • Investigation of the effects of the cross passages in the subway tunnels during fire using CFD methods

  • Evaluate the air conditioning systems of tunnels and stations in different types of subway platforms

  • Design of the jet fans to prevent movement of smoke upstream of the fire against the normal direction of ventilation air flow

  • Develop a three-dimensional model for a tunnel with 4900 m length and a stationary traffic consisted of 1176 vehicles with different scales

  • Analyze of semi-transverse ventilation systems with ceiling ducts and porous dampers for balancing airflow close to the fire incident during a full traffic congestion

  • Recommend control strategies for the pre-commissioning tests of the ventilation systems in underground tunnels with empty and full congestion traffic

  • Numerical Simulation of Water Purification from Pollutant Ions Using Graphene Membrane" using LAMMPS Software

  • Computer Simulations of Pressure and Velocity Fields in Human Upper Airway during Sneezing

Publications

  • Building Physics Assessment of the Walls with Traditional and Modern (BIPV) Façades:

    1. "Experimental study of the hydrodynamic and thermal performance of ventilated wall structures". Building and Environment. 2022, 109616.
    2. "Measuring the effective thermal resistance of ventilated air-spaces behind common wall assemblies: theoretical uncertainty analysis and recommendations for the hot box method modifications (ASHRAE 1759-RP)". Science and Technology for the Built Environment. 2022, 28:3, 320-337.
    3. "Performance of lightweight and heavyweight building walls with naturally ventilated passive and active facades". Energy & Buildings. 2022, 256 (111751).
    4. "Thermal resistance of ventilated air-spaces behind external claddings; definitions and challenges". Science and Technology for the Built Environment. 2021, 27:6, 788-805.
    5. "Review on ventilation rates in the ventilated air-spaces behind common wall assemblies with external cladding". Building and Environment. 2021, 190.
    6. "Experimental and numerical study of dynamic thermal resistance of ventilated air-space behind passive and active façades". Under review.

    Air Conditioning Systems in Underground Tunnels and Subway Platforms:

    7. "CFD simulations of a semi-transverse ventilation system in a long tunnel ". Under review.

    Biomechanics of the Human Upper Airway:

    8. "Computer Simulations of Pressure and Velocity Fields in Human Upper Airway during Sneezing". Computers in Biology and Medicine. 2016.

    Water Purification with Nanomaterials:

    9. "Numerical Simulation of Salt Water Passing Mechanism through Nanoporous Single-Layer Graphene Membrane". Chemical Product and Process Modeling. 2015.
    10. "Transport of water contaminated with various ions through nanoporous graphene: A Molecular dynamics simulation". Under review.

  • Building Physics Assessment of the Walls with Traditional and Modern (BIPV) Façades:

    1. "Heat recovery from ventilated passive and active facades: A numerical case study". 2022, 14th REHVA HVAC World Congress (CLIMA), Netherlands.
    2. "Thermal resistance of the ventilated air-spaces behind external claddings; theoretical definition and a parametric study". Journal of Physics Conference Series. 2021, 2069(1):012197.
    3. "In-situ measurements of the U-value of a ventilated wall assembly ". Journal of Physics Conference Series. 2021, 2069(1):012212.
    4. "Transient thermal response of opaque building envelope elements: EPFL campus case study". Journal of Physics Conference Series. 2021, 2042(1):012080.
    5. "Assessment of thermal and electrical performance of BIPV façades using simplified simulations". Journal of Physics Conference Series. 2021. 2042(1):012081.
    6. "Dynamic Thermal Performance of the BIPV Facades". ASHRAE Transactions. 2021, 127,170-179.
    7. "Impact of the Ventilated Cavity on the Thermal Performance of Traditional Wall Structures". ASHRAE Transactions. 2021, 127, 187-195.

    Air Conditioning Systems in Underground Tunnels and Subway Platforms:

    8. "CFD simulations of longitudinal ventilation of a road tunnel in congested traffic condition". World Tunnel Congress. 2019.

    Water Purification with Nanomaterials:

    9. "Molecular Dynamics simulation of water purification using monolayer graphene membrane". 12th International Conference on Membrane Science and Technology. 2015.

Memberships

Awards

Granted for the precious collaboration in the doctoral work of exceptional quality and to attract highly qualified researchers.

• 2018 École polytechnique fédérale de Lausanne (EPFL)
• 2018 Australian National University (ANU)
• 2018 University of Oxford
• 2017 University of Oxford

Awarded by Iran's National Elites Foundation

Ranked 27th in the Energy Conversion orientation among more than 12,000 participants in the national Universities entrance exam for M.Sc. degree

Ranked 5th among 50 Fluid Mechanics Engineering students

Ranked within the 1% participants among more than 400000 in the national Universities entrance exam for B.Sc. degree

Supervised theses

  • Alexandre Paris Effects of a Building Integrated Photovoltaic system on the thermal performances of a ventilated building envelope 2020

  • Cecile Berquand The impact of wall structure on the transient thermal response of the building envelopes in the EPFL campus 2021

  • Romain Schindelholz Assessment of thermal and electrical performance of BIPV façades using simplified simulations 2021

  • Basir Borhani and Océane Martin Review and performance analysis of the new generation of ventilated building facades with integrated photovoltaics 2020

  • Abdu Rahmati Ventilated building skins; Review and performance evaluation, Master semester project 2019

Language skills and intercultural knowledge

  • Persian - Native or bilingual proficiency
  • English - Full professional proficiency
  • French - Limited working proficiency
  • German - Elementary proficiency