| 1. |
Sasuga Ito, Masato Furukawa, Kazutoyo Yamada, Approximation of Hub Leakage Flow in a High Speed Axial Flow Compressor Rotor with Adjoint Method, The 16th Asian International Conference on Fluid Machinery, 2021.09. |
| 2. |
Kazuya Kusano, Masato Furukawa, Kenichi Sakoda, Tomoya Fukui, Aeroacoustic Simulation of Broadband Sound Generated from a Cross-flow Fan Using Immersed Boundary-Lattice Boltzmann Method, The 16th Asian International Conference on Fluid Machinery, 2021.09. |
| 3. |
Kazuya Kusano, Masato Furukawa, Kenichi Sakoda, Tomoya Fukui, Aeroacoustic simulation of a cross-flow fan using lattice Boltzmann method with a RANS model, INTER-NOISE 2021, 2021.08. |
| 4. |
Isao Tomita and Masato Furukawa, Design Concept with Tip Leakage Vortex Control for Centrifugal Compressor Flow Stabilization, The 18th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, 2020.11. |
| 5. |
Sasuga Ito, Masato Furukawa, Kazutoyo Yamada, Kaito Manabe, Applying Ensemble Kalman Filter to Transonic Flows through a Two-Dimensional Turbine Cascade, The 18th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, 2020.11. |
| 6. |
Sasuga Ito, Masato Furukawa, Satoshi Gunjishima, Takafumi Ota, Kazuhito Konishi, Kazutoyo Yamada, Experimental Investigation of Surge Phenomena in a Transonic Centrifugal Compressor with Intel Distortion, ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition, GT 2020, 2020.09. |
| 7. |
Sasuga Ito, Masato Furukawa, Kazutoyo Yamada, Kaito Manabe, Adaptive Simulation Based on URANS and Ensemble Kalman Filter for Resolving Turbulent Flow on LES, ASME 2020 Fluids Engineering Division Summer Meeting, 2020.07. |
| 8. |
Sasuga Ito, Masato Furukawa, Kazutoyo Yamada, Isao Tomita, Yoshihiro Hayashi, Nobuhito Oka, Evolution Process of Separated Vortical Flow Phenomana in Transonic Centrifugal Compressors with Vaneless Diffuser at Near-Surge, International Gas Turbine Congress (IGTC) 2019 Tokyo, 2019.11. |
| 9. |
Kaito Manabe, Shu Takano, Sasuga Ito, Masato Furukawa, Isao Tomita, Yoshihiro Hayashi, Nobuhito Oka, Control of Leading Edge Separation and Tip Leakage Vortices in a Transonic Centrifugal Compressor Impeller Using an Inverse Design Method Based on Meridional Viscous Flow Analysis, International Gas Turbine Congress (IGTC) 2019 Tokyo, 2019.11. |
| 10. |
S. Saito, K. Watanabe, M. Furukawa, K. Yamada, A. Matsuoka, N. Niwa, Suppression of a Hub-Corner Separation in a Stator Cascade of a Transonic Axial Compressor Using an Inverse Design Method Based on Meridional Viscous Flow Analysis, International Gas Turbine Congress (IGTC) 2019 Tokyo, 2019.11. |
| 11. |
T. Shoyama, B. Kawano, T. Ogata, M. Matsui, M. Furukawa, S. Dousti, Novel Turbo Compressor for Heat Pump Using Water as Refrigerant and Lubricant, The 11th International Conference on Compressors and their Systems, 2019.09. |
| 12. |
Manabe, K., Ito, S., Furukawa, M., Yamada, K., Oka, N., Tomita, I., Hayashi, Y., Simultaneous Optimization of Impeller Blade Loading Distribution and Meridional Geometry for Aerodynamic Design of Centrifugal Compressor, ASME AJKFluids 2019: ASME-JSME-KSME Joint Fluids Engineering Conference, 2019.07. |
| 13. |
Ito, S., Okada, S., Kawakami, Y., Manabe, K., Furukawa, M., Yamada, K., Suppression of Secondary Flows in a Transonic Centrifugal Compressor Impeller Using an Inverse Design Method Based on Meridional Viscous Flow Analysis, ASME AJKFluids 2019: ASME-JSME-KSME Joint Fluids Engineering Conference, 2019.07. |
| 14. |
Sasuga Ito, Masato Furukawa, Satoshi Gunjishima, Hiroki Usuki, Takafumi Ota, Yamada Kazutoyo, Experimental investigation of surge phenomena in a transonic centrifugal compressor, ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019, 2019.06. |
| 15. |
Seishiro Saito, Masato Furukawa, Kazutoyo Yamada, Keisuke Watanabe, Akinori Matsuoka, Naoyuki Niwa, Mechanisms and quantitative evaluation of flow loss generation in a multi-stage transonic axial compressor, ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019, 2019.06, Flow structure and flow loss generation in a transonic axial compressor has been numerically investigated by using a large-scale detached eddy simulation (DES). The data mining techniques, which include a vortex identification based on the critical point theory and a limiting streamline visualization with the line integral convolution (LIC) method, were applied to the DES result in order to analyze the complicated flow field in compressor. The flow loss in unsteady flow field was evaluated by entropy production rate, and the loss mechanism and the loss amount of each flow phenomenon were investigated for the first rotor and the first stator. In the first rotor, a shock-induced separation is caused by the detached shock wave and the passage shock wave. On the hub side, a hub-corner separation occurs due to the secondary flow on the hub surface, and a hub-corner separation vortex is clearly formed. The flow loss is mainly caused by the blade boundary layer and wake, and the loss due to the shock wave is very small, only about 1 percent of the total loss amount in the first rotor. However, the shock/boundary layer interaction causes an additional loss in the blade boundary layer and the wake, which amount reaches to about 30 percent of the total. In the first stator, the hub-corner separation occurs on the suction side. Although only one hub-corner separation vortex is formed in the averaged flow field, the hub-corner separation vortex is generated in multiple pieces and those pieces interfere with each other in an instantaneous flow field. The hub-corner separation generates huge loss over a wide range, however, the loss generation around the hub-corner separation vortex is not so large, and the flow loss is mainly produced in the shear layer between the mainstream region and the separation region. The main factors of loss generation are the boundary layer, wake and hub-corner separation, which account for about 80 percent of the total loss amount in the first stator.. |
| 16. |
Kazutoyo Yamada, Masato Furukawa, Hiromitsu Arai, Sasuga Ito, Effects of upstream bend on aerodynamic performance of a transonic centrifugal compressor, ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019, 2019.06, This paper describes the influence of a bent inlet pipe installed immediately upstream of a transonic centrifugal compressor on the aerodynamic performance and the stability. In order to clarify the influence of the bent inlet pipe, the internal flow fields in the inlet pipe, the impeller, and the diffuser of the compressor have been numerically investigated by a DES (Detached Eddy Simulation). For the purpose of comparison, the simulation was also conducted for the case of uniform axial inflow using a straight pipe. In order to make clear the influence of non-uniform flow with a bent pipe as far as possible, a 90-degree bent pipe was installed immediately upstream of the compressor, that is 0.86 times the inlet inner diameter. In the case of installing the bent pipe on the upstream of the compressor, the pressure ratio decreased on the high flow rate side in the compressor performance characteristic, whereas it increased at the low flow rate side. At the low flow rate operating point, there is a reversed flow occurring in the compressor impeller on the shroud side near the blade leading-edge. Installation of the bent pipe promotes mixing between the reversed flow and the main flow at the inlet of the compressor thanks to occurrence of a secondary flow. Since the reversed flow comes out from inside of the impeller, it has a high circumferential velocity. Therefore, the mixing of the reversed flow makes the compressor inlet flow a pre-swirl flow, and thereby the incidence decreases. As a result, leading-edge separation on the blade tip side of the impeller is suppressed, and the flow field inside the impeller is improved. In the diffuser section, when the bent pipe is installed, the circumferential velocity of the impeller exit flow increases on the hub side, whereas the radial velocity decreases. As a result, the diffuser performance is deteriorated and the diffuser stall tends to occur.. |
| 17. |
K. Yamada, S. Saito, M. Furukawa, A. Matsuoka, N. Niwa, Large Eddy Simulation of Stator Cascade Flow in a Transonic Axial Compressor, Asian Congress on Gas Turbine 2018, 2018.08. |
| 18. |
Sasuga Ito，Kazutoyo Yamada，Masato Furukawa，Kaito Manabe，Nobuhito Oka，Isao Tomita，Yoshihiro Hayashi, The Role of Meridional geometry in Aerodynamic Design of Centrifugal Compressor, ASME 2018 5th Joint US-European Fluids Engineering Summer Conference, 2018.07. |
| 19. |
S. Saito, K. Yamada, M. Furukawa, K. Watanabe, A. Matsuoka, N. Niwa, Flow Structure and Unsteady Behavior of Hub-Corner Separation in a Stator Cascade of a Multi-Stage Transonic Axial Compressor, ASME Turbo Expo 2018, 2018.06. |
| 20. |
Sasuga Itou, Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Seiichi Ibaraki, Kenichiro Iwakiri, Yoshihiro Hayashi, Optimum Aerodynamic Design of Centrifugal Compressor using a Genetic Algorithm and an Inverse Method based on Meridional Viscous Flow Analysis, The 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, 2017.12. |
| 21. |
Seishiro Saito, Masato Furukawa, Kazutoyo Yamada, Yuki Tamura, Akinori Matsuoka, Naoyuki Niwa, Effects of Blade Tip Clearance on Hub-Corner Separation in a Stator Cascade of a Multi-Stage Transonic Axial Compressor, The Ninth JSME-KSME Thermal and Fluids Engineering Conference, 2017.10. |
| 22. |
Seishiro Saito, Masato Furukawa, Kazutoyo Yamada, Yuki Tamura, Akinori Matsuoka, Naoyuki Niwa, Vortical flow structure of hub-corner separation in a stator cascade of a multi-stage transonic axial compressor, The ASME 2017 Fluids Engineering Summer Meeting, 2017.08. |
| 23. |
Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Sasuga Itou, Seiichi Ibaraki, Kenichiro Iwakiri, Yoshihiro Hayashi, Optimum aerodynamic design of centrifugal compressor impeller using an inverse method based on meridional viscous flow analysis, ASME Turbo Expo 2017, 2017.06. |
| 24. |
Kazutoyo Yamada, Masato Furukawa, Hiromitsu Arai, Dai Kanzaki, Evolution of reverse flow in a transonic centrifugal compressor at near-surge, ASME Turbo Expo 2017, 2017.06. |
| 25. |
Kazuya Kusano, Kazutoyo Yamada, Masato Furukawa, Kil-Ju Moon, Direct Numerical Simulation of Turbulent Flow and Aeroacoustic Fields around an Airfoil Using Lattice Boltzmann Method, The ASME 2016 Fluids Engineering Summer Meeting, 2016.07. |
| 26. |
Kazutoyo Yamada, Masato Furukawa, Yuki Tamura, Seishiro Saito, Akinori Matsuoka, Kentaro Nakayama, Large-Scale DES Analysis of Stall Inception Process in a Multi-Stage Axial Flow Compressor, ASME Turbo Expo 2016, 2016.06. |
| 27. |
Kazutoyo Yamada, Masato Furukawa, Satoshi Nakakido, Yuki Tamura, Akinori Matsuoka, Kentaro Nakayama, A Study on Unsteady Flow Phenomena at Near-Stall in a Multi-Stage Axial Flow Compressor by Large-Scale DES with K Computer, The International Gas Turbine Congress 2015 Tokyo, 2015.11. |
| 28. |
Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Yuki Tamura, Shoji Yamada, Takahide Tadokoro, Naohiko Homma, Improvement in Aerodynamic Performance of a Half-Ducted Axial Flow Fan using Meridional Viscous Flow Analysis, The 13th Asian International Conference on Fluid Machinery, 2015.09. |
| 29. |
Mori Hideo, Kyohei Maeda, Masato Furukawa, Masao Akiyoshi, Measurement Technique for Unsteady Low-Speed Flow Fields Using Poly (TMSP)-Based Pressure Sensitive Paint, The ASME-JSME-KSME Joint Fluids Engineering Conference 2015, 2015.07. |
| 30. |
Kazutoyo Yamada, Masato Furukawa, Satoshi Nakakido, Akinori Matsuoka, Kentaro Nakayama, Large-Scale DES Analysis of Unsteady Flow Field in a Multi-Stage Axial Flow Compressor at Off-Design Condition Using K Computer, ASME Turbo Expo 2015, 2015.06. |
| 31. |
Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Akihiro Oka, Yasushi Kurokawa, Aerodynamic Performances and Flow Fields of Pareto Optimal Solutions in an Aerodynamic Design Optimization of a Wind-Lens Turbine, ASME Turbo Expo 2015, 2015.06. |
| 32. |
Isao Tomita, Koji Wakashima, Seiich Ibaraki, Masato Furukawa, Kazutoyo Yamada, Dai Kanzaki, Effects of Flow Height of Impeller Exit and Diffuser on Flow Fields in a Transonic Centrifugal Compressor, ASME Turbo Expo 2015, 2015.06. |
| 33. |
Kazuya Kusano, Kazutoyo Yamada, Masato Furukawa, Numerical Analysis of Unsteady Three-Dimensional Flow in a Propeller Fan Using Lattice Boltzmann Method, The International Conference on Fan Noise, Technology and Numerical Methods 2015, 2015.04. |
| 34. |
Nobuhito Oka, Kota Kido, Kazutoyo Yamada, Masato Furukawa, Aerodynamic Design of Wind-Lens Turbine with Axisymmetric Viscous Flow Calculation using Lattice Boltzmann Method, The 5th Asian Joint Workshop on Thermophysics and Fluid Science, 2014.09. |
| 35. |
Nobuhito Oka, Masato Furukawa, Kota Kido, Akihoro Oka, Yasushi Kurokawa, Aerodynamic Performance of a Wind-Lens Turbine with Optimized Blade Loading Distribution and Wind-Lens Shape, The Grand Renewable Energy 2014 (GRE2014) International Conference, 2014.07. |
| 36. |
Kazutoyo Yamada, Masato Furukawa, Takanori Shibata, Satoshi Nakakido, Nobuhito Oka, Suppression of Secondary Flows in an Axial Flow Turbine Rotor with a Novel Blade Design Concept, ASME Turbo Expo 2014, 2014.06. |
| 37. |
Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Kenta Kawamitsu, Kota Kido, Akihoro Oka, Simultaneous Optimization of Rotor Blade and Wind-Lens for Aerodynamic Design of Wind-Lens Turbine, ASME Turbo Expo 2014, 2014.06. |
| 38. |
Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Kenta Kawamitsu, Kota Kido, Aerodynamic Design Optimization of Wind-Lens Turbine, EWEA Europe’s Premier Wind Energy Event 2014, 2014.03. |
| 39. |
Fujio Akagi, Shota Setoguchi, Youichi Ando, Sumio Yamaguchi, Masato Furukawa, Maximum circulation of vortex ring generated by pulsating jet, The 4th International Conference on Jets, Wakes and Separated Flows, 2013.09. |
| 40. |
Nobuhito Oka, Kenta Kawamitsu, Soichiro Tabata, Masato Furukawa, Kazutoyo Yamada, Kota Kido, Numerical Analysis of Vortical Flow Field around Wind-lens Turbines, The 4th International Conference on Jets, Wakes and Separated Flows, 2013.09. |
| 41. |
Kazuya Kusano, Kazutoyo Yamada, Masato Furukawa, Toward Direct Numerical Simulation of Aeroacoustic Field around Airfoil Using Multi-Scale Lattice Boltzmann Method, The ASME 2013 Fluids Engineering Summer Meeting, 2013.07. |
| 42. |
Nobuhito Oka, Masato Furukawa, Kazutoyo Yamada, Kota Kido, Aerodynamic Design for Wind-lens Turbine Using Optimization Technique, The ASME 2013 Fluids Engineering Summer Meeting, 2013.07. |
| 43. |
Kazutoyo Yamada, Hiroaki Kikuta, Masato Furukawa, Satoshi Gunjishima, Yasunori Hara, Effects of Tip Clearance on the Stall Inception Process in an Axial Compressor Rotor, ASME Turbo Expo 2013, 2013.06. |
| 44. |
Isao Tomita, Seiich Ibaraki, Masato Furukawa, Kazutoyo Yamada, The Effect of Tip Leakage Vortex for Operating Range Enhancement of Centrifugal Compressor, ASME Turbo Expo 2012, 2012.06. |
| 45. |
Kazutoyo Yamada, Hiroaki Kikuta, Kenichiro Iwakiri, Masato Furukawa, Satoshi Gunjishima, An Explanation for Flow Features of Spike-Type Stall Inception in an Axial Compressor Rotor, ASME Turbo Expo 2012, 2012.06. |
| 46. |
Taku IWASE, Tetsushi KISHITANI, Masato Furukawa, INFLUENCE OF BLADE NUMBER ON AERODYNAMIC NOISE OF PROPELLER FANS FOR OUTDOOR UNIT OF AIR-CONDITIONER, FAN 2012, 2012.04. |
| 47. |
Complex Vortical Flow Structure in a Propeller Fan. |
| 48. |
Quasi-Three-Dimensional Blade Design of Wind Turbine with Brimmed Diffuser. |
| 49. |
Numerical Analysis of Internal Flow in Ultrasonic Flowmeter for Gaseous Hydrogen. |
| 50. |
LES Analysis of Complex Flow Fields in a Centrifugal Compressor with Vaneless Diffuser. |
| 51. |
Numerical Analysis of Internal Flow in Ultrasonic Flowmeter for Gaseous Hydrogen. |
| 52. |
Numerical Analysis of Complex Flow Fields in a Centrifugal Compressor with Vaneless Diffuser. |
| 53. |
Experimental and Numerical Investigation of Minichannel Heat Transfer Phenomenon. |
| 54. |
Unsteady Three Dimensional Flow Behavior of Separated Flow in an Axial Flow Compressor Rotor at Rotating Stall. |
| 55. |
Three Dimensional Flow Mechanism of Rotating Stall in an Axial Flow Compressor. |
| 56. |
Effect of Tip Clearance on Structure of Rotating Stall Cell in an Axial Flow Compressor Rotor. |
| 57. |
Three-Dimensional Structure of Vortical Flow Field in a Half-Ducted Propeller Fan. |
| 58. |
Three-Dimensional Aerodynamic Design of Wind Turbine with Brimmed Diffuser Using Inverse Design Method. |
| 59. |
Quasi-Three-Dimensional Aerodynamics Design of Wind Turbine With Brimmed Diffuser. |
| 60. |
Numerical Analysis of Separated and Vortical Flow Field in Propeller Fans. |
| 61. |
Shift from Vector-Parallel to Scalar-Parallel Computers?. |
