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Örjan Johansson
Örjan Johansson

Örjan Johansson

Professor and Head of Subject
Luleå University of Technology
Engineering Acoustics
Operation, Maintenance and Acoustics
Department of Civil, Environmental and Natural Resources Engineering
orjan.johansson@ltu.se
+46 (0)920 491386
T1054 Luleå

Örjan Johansson holding the position as chair professor in Engineering Acoustics at Luleå University of Technology. The research group works in the areas of Architectural & Building Acoustics; Sound & Vibration Quality; and Ultrasound & Acoustic Cavitation. Research is applied within the Built Environment and the Process and Automotive Industry. Current projects are on 'Process intensification by acoustic and hydrodynamic cavitation', 'Sound and vibration performance of timber buildings', 'Sound design of living and work environments', and 'Transfer path analysis for Automotive NVH'.

Educational background within Mechanical Engineering, MSC 1989. PhD 1996 in Physical Environment Technology,  Associate professor in Engineering Acoustics 2006. Broad experience in the field of sound and vibration, linked to sound quality, transfer path analysis, and optimization and control of resonant systems. Supervisor or assistant supervisor for 8 doctoral dissertations, and supervisor for 20 Master Thesis’s. Five years’ experience as senior expert consultant within automotive and process industry.

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Publications

Article in journal

Extraction of tungsten from scheelite using hydrodynamic and acoustic cavitation (2021)

Johansson. Ö, Pamidi. T, Shankar. V
Ultrasonics sonochemistry, Vol. 71
Article in journal

CFD Analysis of Turbulent Fibre Suspension Flow (2020)

Shankar. V, Lundberg. A, Pamidi. T, Landström. L, Johansson. Ö
Fluids, Vol. 5, nr. 4
Article in journal

Comparison of two different ultrasound reactors for the treatment of cellulose fibers (2020)

Pamidi. T, Johansson. Ö, Löfqvist. T, Shankar. V
Ultrasonics sonochemistry, Vol. 62
Article in journal

Numerical modeling and verification of a sonobioreactor and its application on two model microorganisms (2020)

Najjarzadeh. N, Krige. A, Pamidi. T, Johansson. Ö, Enman. J, Matsakas. L, et al.
PLOS ONE, Vol. 15, nr. 3
Conference paper

Acoustic design principles for energy efficient excitation of a high intensity cavitation zone (2019)

Johansson. Ö, Pamidi. T, Shankar. V, Löfqvist. T
Part of: Proceedings of theICA 2019 AND EAA EUROREGIO, 23rd International Congress on Acoustics,integrating 4th EAA Euroregio 2019, s. 948-955, RWTH Publications, 2019
Conference paper

Comparison of Cavitation Effect in Case of Fixed and Free Fibers in an Ultrasound Beaker (2019)

Pamidi. T, Johansson. Ö, Löfqvist. T
Part of: Proceedings of the ICA 2019 AND EAA EUROREGIO, 23rd International Congress on Acoustics,integrating 4th EAA Euroregio 2019, s. 8201-8208, RWTH Publications, 2019
Conference paper

Energy Efficient Fibrillation of Cellulose Fibers using an Ultrasound Reactor (2019)

Pamidi. T, Johansson. Ö, Löfqvist. T
Paper presented at : Marcus Wallenberg Prize Symposium 2019, Stockholm, Sweden, October 6–9, 2019
Conference paper

Comparison of Different Concepts of UltrasoundReactors Using Numerical Simulations (2018)

Pamidi. T, Johansson. Ö, Löfqvist. T
Paper presented at : 16th Meeting of the European Society of Sonochemistry, 15-19 April, 2018, Besançon, France
Article in journal

Flow Induced Venturi Cavitation to Improve Energy Efficiency in Pulp Production (2018)

Shankar. V, Lundberg. A, Frenander. K, Landström. L, Pamidi. T, Johansson. Ö
Journal of Fluid Flow, Heat and Mass Transfer (JFFHMT), Vol. 5, s. 10-17
Conference paper

An Automatic Method for Optimizing Venturi Shape in Cavitation Flows (2017)

Shankar. V, Lundberg. A, Frenander. K, Landström. L, Pamidi. T, Johansson. Ö
Part of: Proceedings of the 4th International Conference of Fluid Flow, Heat and Mass Transfer (FFHMT'17), s. 160-1-160-8, Avestia Publishing, 2017, 160