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Theoretical Study on Eco-Driving Technique for an Electric Vehicle with Dynamic Programming
Kuriyama, Motoi,Yamamoto, Sou,Miyatake, Masafumi Journal of International Conference on Electrical 2012 Journal of international Conference on Electrical Vol.1 No.1
Eco-driving technique for electric vehicles (EVs) is investigated in this paper. Many findings on EVs have been reported; however, they did not deal with eco-driving from the viewpoint of theoretical study. The authors have developed an energy-saving driving technique - the so-called "eco-driving" technique based on dynamic programming (DP). Optimal speed profile of an EV, which minimizes the amount of total energy consumption, was determined under fixed origin and destination, running time, and track conditions. DP algorithm can deal with such complicated conditions and can also derive the optimal solution. Using the proposed method, simulations were run for some cases. In particular, the author ran simulations for the case of a gradient road with a traffic signal. The optimization model was solved with MATLAB.
栗山 ?(Kuriyama, Midori) 한국일본문화학회 2016 日本文化學報 Vol.0 No.70
This study is based on the viewpoint of the human body as a symbol of its culture and focused on Japanese legs and feet. In this paper I reconsidered about Japanese acts of shoes wearing and off by investigating indoor-shoes (slippers). As a result, Japanese have a long history of wearing indoor-shoes while they have a custom to remove shoes for indoor. And modern Japanese continues this custom of wearing slippers when indoors. I suppose that their original reason of wearing indoor shoes was to get warm because of the function in Japanese traditional house and also Japanese high level of hygiene. For most modern Japanese wearing indoor shoes became a custom without being aware of its purpose and they developed this custom to have a tendency of changing shoes for each space which was divided by a line. I concluded that investigating Japanese act of shoes-off was also needed for research of Japanese foot culture.
Optimum injection considering shot timing for Die casting by using CFD simulator
Yoshifumi Kuriyama,Ken’ichi Yano,Seishi Nishido 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Die casting is adequate for mass production and it has the advantage of being able to yield a complicated shape accurately. A defect of Die casting for high-speed injection molding is the occurrence of shrinkage cavities. To avoid the shrinkage cavities, velocity control of a plunger is very effective. However, the velocity control input is manually constructed by skillful workers because analysis behavior of molten metal is very difficult and the injection molding is performed in invisible places in the mold. In this paper, fluid behavior and quantity of air entrainment caused by a die casting plunger movement are analyzed by using CFD. The optimum velocity control input of die casting plunger is calculated in order to enable the reduction of air entrainment and prevent the occurrence of shrinkage cavities in die casting product. An optimization is performed by the Genetic algorithm incorporating CFD simulator.
SHINJI KURIYAMA,TETSUAKI TAKEDA,SHUMPEI FUNATANI 한국원자력학회 2015 Nuclear Engineering and Technology Vol.47 No.5
In the very high temperature reactor (VHTR), which is a next generation nuclear reactorsystem, ceramics are used as a fuel coating material and graphite is used as a core structuralmaterial. Even if a depressurization accident occurs and the reactor power goes up instantly,the temperature of the core will change only slowly. This is because the thermal capacity ofthe core is so high. Therefore, the VHTR system can passively remove the decay heat of thecore by natural convection and radiation from the surface of the reactor pressure vessel. Theobjectives of this study are to investigate the heat transfer characteristics of natural convectionof a one-side heated vertical channel with inserted porous materials of high porosityand also to develop the passive cooling system for the VHTR. An experiment was carried outusing a one-side heated vertical rectangular channel. To obtain the heat transfer and fluidflow characteristics of the vertical channel with inserted porous material, we have alsocarried out a numerical analysis using a commercial Computational Fluid Dynamics (CFD)code. This paper describes the thermal performances of the one-side heated vertical rectangularchannel with an inserted copper wire of high porosity.
FIELD STUDY ON BEACH CHANGE AT HASAKI
Yoshiaki Kuriyama 한국해안해양공학회 1999 학술강연회 발표논문초록집 Vol.2 No.1
Hazaki Oceanographical Research Station (HORS) is a field observation pier of 427 m in length on the Hasaki Coast of Japan facing the Pacific Ocean. This paper presents research activities at HORS on sediment movement and topography change including berm erosion, sediment suspension, longshore bar movement, beach profile change on backshore and foredune, and a new beach protection system.
栗山綠(Midori, Kuriyama) 한국일본문화학회 2015 日本文化學報 Vol.0 No.64
This study is investigating cultural diversity in Japanese foot and leg from the point that human body could be an emblem of its culture. In this paper I discussed about Japanese gait forms. According to previous researches, there were six main characters of Japanese gait form between the end of 19<SUP>th</SUP> century and the beginning of 20<SUP>th</SUP> century, from the end of Edoera to Meiji era(1). Those were ①shuffling, ②short strides, ③inward, ④fore-foot landing, ⑤leaning forward, ⑥odd sound. In the 20<SUP>th</SUP> century(2)‘pitch’walking forms(short-stride with many steps) and fast speed were proved physiologically and sociologically. The factor of (1) was mostly wearing Japanese traditional footgear (Geta:下?, Zohri:草履), and (2) was considered an influence of high speed society in modern days. I presume that (1) might be Japanese natural gait forms regardless of footgear because most Japanese gait characters were inherited among modern Japanese who didn’t wear traditional footgear and whose physique were taller and bigger than before. And an interesting point was that there were Gait culture in Japanese gait character ① and ⑥. One was called ‘hachimonji (八文字)’ gait, which was special shuffling gait with ‘Taka-geta (高下?)’by ‘Oiran(花魁)’ courtesans as a show in Edo era. The other was Japanese unique sense to enjoy walking sounds by ‘Setta (雪?)’, ‘Pokkuri (木履)’or‘Hikizuri-geta (引きずり下?)’ as stylish or charm sound. Japanese had unique gait forms in the past and now. Furthermore nowadays foot reflexology, five-toe socks and pedicure were getting popular and popular because of so-called‘Healing’ therapy boom. I believe these Japanese new interests in foot and leg must add new cultural diversity.