Acquiring a solid background in the four branches of mechanical engineering: thermodynamics, fluid dynamics, material mechanics and mechanics; our students are able to clarify various physical phenomena from a mechanical perspective. They apply this knowledge to the actual manufacturing process to realize product development and analysis breakthroughs that go beyond conventional limits. We train mechanical engineers and researchers to create new value through exploratory approaches.
|Thermal Energy Engineering laboratory||Control of Transport Phenomena laboratory|
|In the thermal engineering field we conduct research related to combustion and fuel cells.
For combustion related research, we use detailed numerical analysis referencing elementary reaction dynamics in an attempt to shed light on the phenomena where laminar flamelets undergoing localized unsteady expansion are extinguished and reignited, as well as to further understand group combustion behavior of fuel spray. We also aim to reduce atmospheric pollutants through the use of intermittent intra-cycle fuel spray in diesel combustion.
Furthermore, we attempt to clarify the effect of changes in turbulence has on radiation heat transfer, a critical factor in large-scale combustion devices, as well as taking a computational electromagnetics approach to identify the impact multiple scattering from soot and ash has on radiation heat transfer.
We also use computational electromagnetics to clarify the impact non-spherical shapes and multiple scattering has on measurement errors in optical particle measurement technology, a critical area in fuel spray research.
In fuel cell related research, based on water distribution measurement within electrodes, we aim to develop electrode and separator structures for solid polymer fuel cells that can prevent flooding, as well as to develop practical analysis code to predict in detail the inner state of solid oxide fuel cells.
|The flow of heat and materials in fluids are critical physical and chemical phenomena we see in and around living organisms, in water environments and processes, and in the products we use in our daily lives and industrial facilities. We are mainly focused on the drag that acts in and upon heat transfer devices, water heaters, blood circulation and organisms that swim at high speed in water; as well as how antifreeze proteins inhibit ice formation. Through experimentation and numerical simulation we work towards an understanding of these phenomena and clarification of the mechanisms. We also develop ways to promote and control these phenomena with targeted introduction of gas cells, consider ways to develop energy devices with low environmental impact, and establish new energy saving technologies using hints from organisms.|
|Advanced Fluid Dynamics and Energy Transfer laboratory||Fluid Energy System laboratory|
|Here at the Advanced Fluid Dynamics and Energy Transfer laboratory, we conduct research from a variety of different perspectives, such as developing algorithms and their applications for flow phenomena computer simulation technology, and the explication of the core physics to these phenomena. While our activities are officially classified into Computational Fluid Dynamics (CFD), what we do here goes beyond that framework as we aim for a more inclusive CFD that includes all perspectives of fluid kinematics. We research such areas as computational grid formation, super-effective algorithms, parallel calculations, intelligent calculations, visualization, and furthermore, conduct research into the kinetics of bodies within the fluid and to construct the simulation technologies to encompass all of these factors.||Couplings of fluids and structural bodies can be witnessed in all areas of engineering, from the movement of structured bodies as a result of fluid flow, or the flow of fluid propelled by the movement of a piston. Specifically, there is a fluid to gas phase transition in a dynamic environment where the pressure of a fluid falls below the saturation vapor pressure. Also as the concentration of a gas drops, the unique rarified gas flow phenomena occurs.
Closer to home, however, we can observe the interaction between our blood (fluid) and the blood vessel walls (solid); a mechanism that helps to keep us alive. We use computational mechanics analysis to recreate and clarify these kinds of flow phenomena, as well as conduct research in such broad areas as increasing energy efficiencies, environmental issues, and biological engineering.
|Computational Engineering laboratory||Mechanics of Materials laboratory|
|We conduct research into the development and applications of robust and intelligent simulation technologies that are precise, effective and multi-purpose, mainly focusing on flow phenomena of continuum. We specifically develop a Cartesian coordinates approach method which is superior for multi-purpose analysis of complex flow phenomena of continuum, develop numerical computational methods for the simultaneous analysis of multiple flow phenomena, conduct research related to experiment result information processing technologies for the integrated feedback of experiment and simulation results, as well as apply the developed calculation methodologies to simulate the actual flows within Lake Biwa and then predict oxygen concentrations, etc., within the Lake Biwa circulatory system. Through our research, we also aim to educate our students so that they have the foundational characteristics to be high-level engineers.||When designing machines and structures we must know the strength of the materials that will be used for the parts and components in our designs. The strength of the materials used directly impacts the structure they are used in, so here we conduct research to analytically clarify the effect that microstructure and microscopic fracture behavior have on a material’s strength and rigidity. We also develop numerical analysis methods that will be useful for the analysis of overall machine and structure mechanical behavior.|
|Computational Materials Design laboratory||Vibration Prevention and Control laboratory|
|The purpose of our research is to predict the microstructure of a material, from the raw material state and through all the processing, heat treatment and so on that the material undergoes until the final product is achieved. We predict the mechanical characteristics of a material with this microstructure, and couple this predictive methodology with optimization techniques to design material microstructures as well as to develop numerical material design technologies to make it possible to design processes to achieve the desired microstructure. We mainly do this by using the phase-field method and combine multiple numerical simulation methods.
Materials have a layered structure and multiple phenomena occur simultaneously during material processing. We construct multi-scale and multi-physics computational technologies and use the power of supercomputers to develop large-scale simulation technologies.
|All kinds of matter vibrate and generate noise, not just machines or structures.
Using the principles of the vibration dynamics area of mechanical dynamics as the core technology, we research how we can suppress vibrations from earthquakes and tsunamis and maintain safety in instruments in manufacturing plants, on high-speed vehicles and so on, and so research the core elemental technologies for seismic resistance, seismic suppression and seismic isolation.
We introduce seismic design theory, nonlinear systems theory and optimized control theory to these elemental technologies to try and construct safer and more sustainable (longer lasting) machinery and structural systems.