Juhani Hyvärinen

Professor

Energy

LUT School of Energy Systems

Lappeenranta

Juhani.Hyvarinen@lut.fi

+358505241512

Research areas

Energy Engineering and Power Technology

Nuclear Energy and Engineering

Safety, Risk, Reliability and Quality

Biography

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An overall safety concept for nuclear power plants

2022

Publication type

A1 Journal article (refereed), original research

Author(s)

Hyvärinen Juhani, Vihavainen Juhani, Ylönen Marja, Valkonen Janne

Energy - Transition to carbon-neutral world

LUT School of Energy Systems

Modeling of Horizontal Steam Injection in a Water Pool

2022

Publication type

A4 Conference proceedings

Author(s)

Patel Giteshkumar, Hujala Elina, Puustinen Markku, Hyvärinen Juhani

Energy - Transition to carbon-neutral world

LUT School of Energy Systems

Natural circulation experiment with the PASI facility – observations on phenomena with an open passive heat removal loop

2022

Publication type

A4 Conference proceedings

Author(s)

Riikonen Vesa, Kouhia Virpi, Telkkä Joonas, Hyvärinen Juhani

Other Focus Area

Energy - Transition to carbon-neutral world

Nuclear Energy and Engineering

LUT School of Energy Systems

PIEMOS-selvitys: Uusien ydinenergiateknologioiden mahdollisuudet ja kehitystarpeet

2022

Publication type

D1 Article in a trade journal

Author(s)

Hyvärinen Juhani, Vihavainen Juhani

Energy - Transition to carbon-neutral world

LUT School of Energy Systems

Uusien ydinenergiateknologioiden mahdollisuudet ja kehitystarpeet : Pienet modulaariset sarjavalmisteiset ydinreaktorit eli SMR:t

2022

Publication type

D4 Published development or research report or study

Author(s)

Hujala Elina, Hyvärinen Juhani, Rintamaa Rauno, Suikkanen Heikki, Vihavainen Juhani, Wähä Susanna

Energy - Transition to carbon-neutral world

LUT School of Energy Systems

PASI – A test facility for research on passive heat removal

2021

Publication type

A1 Journal article (refereed), original research

Author(s)

Kouhia Virpi, Riikonen Vesa, Kauppinen Otso-Pekka, Telkkä Joonas, Hyvärinen Juhani

Nuclear Energy and Engineering

LUT School of Energy Systems

PASI – A test facility for research on passive heat removal

2021

Publication type

A4 Conference proceedings

Author(s)

Kouhia Virpi, Riikonen Vesa, Kauppinen Otso-Pekka, Telkkä Joonas, Hyvärinen Juhani

Nuclear Energy and Engineering

LUT School of Energy Systems

Reactor core conceptual design for a scalable heating experimental reactor, LUTHER

2021

Publication type

A4 Conference proceedings

Author(s)

Truong Thinh, Suikkanen Heikki, Hyvärinen Juhani

Nuclear Energy and Engineering

LUT School of Energy Systems

The Sarena Project: Completing a Master's Degree in Nuclear Engineering Combining Different Educational and Cultural Environments

2021

Publication type

A4 Conference proceedings

Author(s)

Abdelouas A., Hartnack C., Gallego E., Elorza F.J., Hyvärinen J., Vihavainen J., Tiselj I., Kljenak I.

Energy - Transition to carbon-neutral world

LUT School of Energy Systems

System code analysis of accumulator nitrogen discharge during LOCA experiment at PWR PACTEL test facility

2019

Publication type

A1 Journal article (refereed), original research

Author(s)

Kauppinen Otso-Pekka, Kouhia Virpi, Riikonen Vesa, Hyvärinen Juhani

Corrigendum to Direct contact condensation modeling in pressure suppression pool system [Nuclear Engineering and Design 321 (2017) 328–342](S0029549316302977)(10.1016/j.nucengdes.2016.08.026))

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Patel Giteshkumar, Tanskanen Vesa, Hujala Elina, Hyvärinen Juhani

Experimental observation of adverse and beneficial effects of nitrogen on reactor core cooling

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Riikonen Vesa, Kouhia Virpi, Kauppinen Otso-Pekka, Sjövall Heikki, Hyvärinen Juhani

Frequency analysis of chugging condensation in pressure suppression pool system with pattern recognition

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Hujala Elina, Tanskanen Vesa, Hyvärinen Juhani

Nuclear Energy and Engineering

LUT School of Energy Systems

Pattern recognition algorithm for analysis of chugging direct contact condensation

2018

Publication type

A1 Journal article (refereed), original research

Author(s)

Hujala Elina, Tanskanen Vesa, Hyvärinen Juhani

DEM in Analyses of Nuclear Pebble Bed Reactors

2017

Publication type

A4 Conference proceedings

Author(s)

Suikkanen Heikki, Rintala Ville, Hyvärinen Juhani

Nuclear Energy and Engineering

LUT School of Energy Systems

Direct contact condensation modeling in pressure suppression pool system

2017

Publication type

A1 Journal article (refereed), original research

Author(s)

Patel Giteshkumar, Tanskanen Vesa, Hujala Elina, Hyvärinen Juhani

Nuclear Energy and Engineering

Energy

Modelling and Simulation

LUT School of Energy Systems

Estimation of velocity fields from the axial wire-mesh sensor data

2017

Publication type

A1 Journal article (refereed), original research

Author(s)

Telkkä Joonas, Ylönen Arto, Hyvärinen Juhani, Varju Tamas

Nuclear Energy and Engineering

LUT School of Energy Systems

Frequency Analysis of Chugging Condensation in Pressure Suppression Pool System with Pattern Recognition

2017

Publication type

A4 Conference proceedings

Author(s)

Hujala Elina, Tanskanen Vesa, Hyvärinen Juhani

Modularity Based Requirements of MOTEL

2017

Publication type

D4 Published development or research report or study

Author(s)

Telkkä Joonas, Hyvärinen Juhani, Kauppinen Otso-Pekka

Numerical Modelling of Direct Contact Condensation of Steam in BWR Pressure Suppression Pool System

2016

Publication type

A4 Conference proceedings

Author(s)

Patel Giteshkumar, Tanskanen Vesa, Hyvärinen Juhani

Other Focus Area

LUT School of Energy Systems

Research based requirements of MOTEL

Telkkä Joonas, Hyvärinen Juhani

Nuclear Energy and Engineering

Energy

LUT School of Energy Systems

ANALYSIS OF REVERSE FLOW IN LOW-RISE INVERTED U-TUBE STEAM GENERATOR OF PWR PACTEL FACILITY

2015

Publication type

A4 Conference proceedings

Author(s)

Kauppinen Otso-Pekka, Riikonen Vesa, Kouhia Virpi, Hyvärinen Juhani

Energy

Engineering

LUT School of Energy Systems

CFD modelling of chugging condensation regime of bwr suppression pool experiments

2015

Publication type

A4 Conference proceedings

Author(s)

Tanskanen Vesa, Patel Giteshkumar, Puustinen Markku, Hujala Elina, Kyrki-Rajamäki Riitta, Hyvärinen Juhani

Nuclear Energy and Engineering

Fluid Flow and Transfer Processes

Energy

LUT School of Energy Systems

Computer analyses on loop seal clearing experiment at PWR PACTEL

2015

Publication type

A1 Journal article (refereed), original research

Author(s)

Kauppinen Otso-Pekka, Kouhia Virpi, Riikonen Vesa, Hyvärinen Juhani, Sjövall Heikki

Nuclear Energy and Engineering

LUT School of Energy Systems

Numerical study of direct contact condensation of steam on stable interface in a BWR suppression pool test facility

2015

Publication type

A4 Conference proceedings

Author(s)

Patel Giteshkumar, Tanskanen Vesa, Rintala Ville, Hyvärinen Juhani

Nuclear Energy and Engineering

Fluid Flow and Transfer Processes

Energy

LUT School of Energy Systems

Sources and Effect of Non-Condensable Gases in Reactor Coolant System ofLWR

2015

Publication type

A4 Conference proceedings

Author(s)

Kral Pavel, Hyvärinen Juhani, Prosek Andrej, Guba Attila

Nuclear Energy and Engineering

Safety, Risk, Reliability and Quality

Energy

LUT School of Energy Systems

Study of Two-Phase Pipe Flow using the Axial Wire-Mesh Sensor

2015

Publication type

A4 Conference proceedings

Author(s)

Ylönen Arto, Hyvärinen Juhani

Experimental and Numerical Studies of Liquid Dispersal from a Soft Projectile Impacting a Wall

2007

Publication type

A4 Conference proceedings

Author(s)

Silde Ari, Hostikka Simo, Kankkunen Ari, Hyvärinen Juhani, Hakola Ilkka

Nuclear Energy and Engineering

Mechanics of Materials

Civil and Structural Engineering

LUT School of Energy Systems

Impact Test Facility

2007

Publication type

A4 Conference proceedings

Author(s)

Lastunen Auli, Hakola Ilkka, Järvinen Erkki, Calonius Kim, Hyvärinen Juhani

Nuclear Energy and Engineering

Safety, Risk, Reliability and Quality

Civil and Structural Engineering

LUT School of Energy Systems

Numerical Studies on Impact Loaded Reinforced Concrete Walls

2007

Publication type

A4 Conference proceedings

Author(s)

Saarenheimo Arja, Tuomala markku, Calonius Kim, Lastunen Auli, Hyvärinen Juhani, Myllymäki Jukka

Nuclear Energy and Engineering

Safety, Risk, Reliability and Quality

Civil and Structural Engineering

LUT School of Energy Systems

Dryout heat flux experiments with deep heterogeneous particle bed

2006

Publication type

A1 Journal article (refereed), original research

Author(s)

Lindholm Ilona, Holmström S, Miettinen J, Lestinen V, Hyvärinen Juhani, Pankakoski P, Sjövall H

Numerical and experimental studies on impact loaded concrete structures

2006

Publication type

A4 Conference proceedings

Author(s)

Saarenheimo Arja, Hakola Ilkka, Kärnä Tuomo, Hyvärinen Juhani, Tuomala Markku

Nuclear Energy and Engineering

Safety, Risk, Reliability and Quality

Civil and Structural Engineering

LUT School of Energy Systems

Juhani Hyvärinen

Biography

Research interests

Publications links