Shimazaki, Yasuhiro

Japanese

Affiliation	Department of Architecture and Civil Engineering
Concurrent post	Research Center for Collaborative Area Risk Management (CARM)
Title	Associate Professor
Fields of Research	Building Science, Environmental Engineering, Thermal Ergonomics
Degree	Dr.ENG
Academic Societies	Architectural Institute of Japan, The Japan Society of Mechanical Engineers, The Heat Transfer Society of Japan, Japan Society of Thermophysical Properties, Japanese Society of Human Environment System
E-mail	shimazaki@ace Please append ".tut.ac.jp" to the end of the address above.
Researcher information URL（researchmap）	Researcher information

Theme1：Urban design for thermal comfort and environmental noise

Overview

Examples of performed research

Traditional studies of thermal environments were performed indoors under uniform conditions. Because outdoor heat stresses people more severely than indoor heat, such extreme heat exposure is concerned about discomfort or risks of health. Since a thermal comfort index is a useful tool for understanding the experiencing environment, we proposed the human thermal load, which is　a thermal comfort index based on the energy balance of the human body. In a steady state, and even in an unsteady state with its variations in weather and human factors, thermal comfort values can generally be obtained by using the overall human thermal load. The application for environmental planning is now examining with using human thermal load method. It has a lot of potentials by　combining characteristics of material around living environment.

Selected publications and works

[1] Yasuhiro SHIMAZAKI, Atsumasa YOSHIDA, Ryota SUZUKI, Takeshi KAWABATA, Daiki IMAI, Shinichi KINOSHITA, Application of human thermal load into unsteady condition for improvement of outdoor thermal comfort, Building and Environment, Vol.46(8) pp.1716-1724, 2011.
[2] Atsumasa YOSHIDA, Daiki HAYASHI, Yasuhiro SHIMAZAKI, Shinichi KINOSHITA, Evaluation of thermal sensation in various outdoor radiation environments, Architectural Science Review, Vol.62(3) pp.261-270, 2019.
[3] Yasuhiro SHIMAZAKI, Masashige AOKI, Jumpei NITTA, Hodaka OKAJIMA, Atsumasa YOSHIDA, Experimental determination of pedestrian thermal comfort on water-retaining pavement for UHI adaptation strategy, Atmosphere Vol.12(2), 127, 2021.

Keywords

Evaluation of urban environment, Environmental assessment, Urban heat island, Environmental noise, Human thermal model, Functional pavement, Urban greening

Theme2：Indoor comfort and healthy living environments

Overview

Examples of performed research

Improving thermal comfort and heath, and saving energy in buildings are important design concepts. Thus we developed evaluation tools for thermal environments, air conditions such as flow analysis and pollutant distributions, and we utilized to optimize indoor environments. In particular, we focus on passive technologies such as insulation and natural ventilation for healthy building. The application in an IoT smart home is now examining by sensing both environments and humans.

Selected publications and works

[1] Yasuhiro SHIMAZAKI, Masaaki OKUBO, Toshiaki YAMAMOTO, Three-dimensional numerical simulation of nanoparticle inhalation and indoor pollution around breathing human, Journal of Environment and Engineering, Vol.4(1), pp.146-161, 2009.
[2] Yasuhiro SHIMAZAKI, Shunpei KATSUTA, Spatiotemporal sweat evaporation and evaporative cooling in thermal environments determined from wearable sensors, Applied thermal Engineering, Vol.163, 114422, 2019.

Keywords

Passive architecture, Insulation/airtight, Ventilation, Flow visualization, Smart sensing

Theme3：Ergonomics applications contributing to enhancing QOL (Quality Of Life)

Overview

Examples of performed research

Our research topics mainly include, but are not limited to thermal aspect of human comfort. Product designs have continued to advance in an effort to improve comfort and performance　and reduce ergonomics risks. One of fundamental ergonomic　principles is to reduce excessive force or stress. For example, we　investigated the mechanical properties along with the viscoelastic　behavior of laminated EVA foams and we provide a useful　database for optimizing dynamic shock-absorption performance, which is applicable to footwear midsoles and paddings for　preventing hip fractures.

Selected publications and works

[1] Yasuhiro SHIMAZAKI and Masaaki MURATA, Effect of gait on formation of thermal environment inside footwear, Applied Ergonomics, Vol.49, pp.55-62, 2015.
[2] Yasuhiro SHIMAZAKI, Shojiro GOTO, Atsumasa YOSHIDA, Takanori YAMAMOTO, The effect of solar radiation on temperature distribution in outdoor human-clothing-environment systems, International Journal of Heat and Mass Transfer, Vol.104, 1-6, 2017.
[3] Yasuhiro SHIMAZAKI, Shigeru NOZU, and Takahiro INOUE, Shock-absorption properties of functionally graded EVA laminates for footwear design, Polymer Testing, Vol.54, pp.98-103, 2016.

Keywords

Ergonomics, Human dynamics, QOL, Thermo-physical property, Clothing micro-climate, Flow analysis, Heat transfer, Radiation environment

Title of class

Bachelor's: Environmental physics, Building Environmental Engineering 2,,Building Services, Experimental Practice of Environmental Engineering
Master's: Building Climate Design, Building Science: Indoor Air Quality and Ventilation
Doctor's: Advanced Indoor Climate and Building Service Engineering