日本語
The University of Electro-Communications 
Graduate School of Informatics and Engineering, School of Informatics and Engineering 
Division of General Education 

Associate Professor 
Saito Hirokazu 

Career
Waseda University  Faculty of Science and Engineering  Junior Researcher  2015/04/01-2016/03/31 
Waseda University  Faculty of Science and Engineering  Assistant Professor  2016/04/01-2018/03/31 
Tokyo University of Science  Faculty of Industrial Science and Technology, Liberal Arts  Junior Associate Professor  2018/04/01-2020/02/29 
Waseda University  Interdisciplinary Institute for Thermal Energy Conversion Engineering and Mathematics  Adjunct Researcher  2018/05/01-Present 
The University of Electro-Communications  School of Informatics and Engineering  Associate Professor  2020/03/01-2020/03/31 
The University of Electro-Communications  Graduate School of Informatics and Engineering  Associate Professor  2020/04/01-Present 

Academic degrees
Doctor of Science  Waseda University  2015/03 

Classes responsible within the university
2021  Exercise in Mathematics 1  Spring semester  Undergraduate, daytime 
2021  Calculus Ⅰ  Spring semester  Undergraduate, daytime 
2021  Exercise in Mathematics 2  Fall semester  Undergraduate, daytime 
2021  Analysis  Fall semester  Undergraduate, daytime 
2021  Analysis  Fall semester  Undergraduate, daytime 
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Classes responsible in other universities
2020  Linear Algebra 1  Tokyo University of Science 
2020  Calculus 1  Tokyo University of Science 
2020  Calculus 2  Tokyo University of Science 
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Current research areas
Mathematical analysis 

Current research subjects
Mathematical analysis of partial differential equations in fluid dynamics  2012-Present 

Published books
Book  Fluids Under Pressure  Y. Shibata, H. Saito  Birkhauser  157-347  2020/04  978-3-030-39638-1 
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Published papers
Paper  Yes  Unique solvability of elliptic problems associated with two-phase incompressible flows in unbounded domains  Joint  H. Saito, X. Zhang  Discrete Contin. Dyn. Syst.  41/ 10, 4609-4643  2021/10  10.3934/dcds.2021051 
Paper  Yes  Existence of R-bounded solution operator families for a compressible fluid model of Korteweg type on the half-space  Only  H. Saito  Math. Methods Appl. Sci.  44/ 2, 1744-1787  2021/01  10.1002/mma.6875 
Paper  Yes  Some free boundary problem for two-phase inhomogeneous incompressible flows  Joint  H. Saito, Y. Shibata, X. Zhang  SIAM J. Math. Anal.  52/ 4, 3397-3443  2020  10.1137/18M1225239 
Paper  Yes  On the maximal Lp-Lq regularity for a compressible fluid model of Korteweg type on general domains  Only  H. Saito  J. Differential Equations  268/ 6, 2802-2851  2020/03  10.1016/j.jde.2019.09.040 
Paper  Yes  Compressible fluid model of Korteweg type with free boundary condition: model problem  Only  H. Saito  Funkcial. Ekvac.  62/ 3, 337-386  2019/12  10.1619/fesi.62.337 
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Research presentations
Oral presentation for an academic conference  On the two-phase free boundary problem for incompressible viscous flows  微分方程式の総合的研究  No  H. Saito  2020/12 
Oral presentation for an academic conference  On elliptic problems associated with two-phase incompressible flows in unbounded domains  MSJ Spring Meeting 2020  No  H. Saito, X. Zhang  2020/03 
Oral presentation for an academic conference  Local solvability of the Navier-Stokes-Korteweg equations in the maximal regularity class  MSJ Autumn Meeting 2018  No  H. Saito  2018/09 
Workshop  On the two-phase Navier-Stokes equations in unbounded domains  International Workshop on the Multi-Phase Flow; Analysis, Modeling and Numerics  No  H. Saito  2020/12 
Workshop  A maximal regularity approach to compressible fluid models of Korteweg type  第8回室蘭非線形解析研究会  No  H. Saito  2019/02 
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Awards
MSJ Takebe Katahiro Prise  2020/09 
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Grants-in-aid for scientific research
Stability of solutions of two-phase flow equations  Early-Career Scientists  2021/04-2026/03  Principal Investigator 
Mathematical analysis for Navier-Stokes equations with approximate parameter  "Scientific research (C), general"  2019/04-2023/03  Co-Investigator 
Mathematical analysis of two-phase flow equations in unbounded domains  Young scientists (B)  2017/04-2021/03  Principal Investigator 
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Memberships of academic societies
The Japan Society of Fluid Mechanics  2017-Present 
The Mathematical Society of Japan  2012-Present 
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Involvement in conference and research meetings
International Workshop on Multiphase Flows: Analysis, Modelling and Numerics  Organizer  2021/11 
International Workshop on Multiphase Flows: Analysis, Modelling and Numerics  Organizer  2020/12 
Harmonic Analysis and the Navier-Stokes equations  Organizer  2018/09 
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Social activities
Other social contributions  Mathematical Reviews/MathSciNet Reviewer  2017-Present 
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