Overview

We have targeted a number of key technology areas of the 21st century where we expect to make a significant impact with the high-power fluid–structure interaction (FSI) modeling techniques we have been developing. These areas are biotechnology, space and energy. We recognize that in these targeted areas FSI modeling will play a crucial role in advancing the technology with reliable computational analysis, performance evaluation, correlation studies, and bringing new solutions and new designs. Our research objective is to play that role. This will require addressing even more computational challenges than the many that we have already successfully addressed. Creative development of new modeling techniques needed to address those additional challenges is also our research objective.


  • (日本語) 佐々木がUSACM Conference on Isogeometric Analysis and Meshfree Methodsで発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. ”Estimation of Arterial ElementBased ZeroStress State with T-Splines Wall Discretization” というタイトルで発表します。 Takafumi Sasaki*, Kenji Takizawa, Tayfun Tezduyar USACM Conference on Isogeometric Analysis and Meshfree Methods, Estancia La Jolla Hotel and Spa, Technical Session #13-5: Application of IGA ...
  • (日本語) 滝沢がUSACM Conference on Isogeometric Analysis and Meshfree Methodsで発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. ”Aorta and Heart Valve Flow Analysis with the Space-Time Topology Change (ST-TC) Method and NURBS in Space” というタイトルで発表します。 Kenji Takizawa*,Takuya Terahara, Hiroaki Uchikawa, Tayfun E. Tezduyar USACM Conference on Isogeometric Analysis and Meshfree Methods, Estancia La ...
  • mav_tc_helicity_is_10
    Flapping-wing aerodynamics with wing clapping
    Flapping-wing aerodynamics of an MAV with wing clapping. In the analysis, the wings are brought into an actual contact when they clap. See more details .
  • valve_fem_velo_mag2_0100
    Fluid mechanics computation of heart valve
    We present computation for an aortic valve with coronary arteries. The computation demonstrates that the ST-TC method can bring interface-tracking accuracy to fluid mechanics of heart valve, and can do that with computational practicality. See more details .
  • flap-vort-2
    Aerodynamics of Flapping Wings
    Computation of the aerodynamics of locust flapping wings. The prescribed motion and deformation of the locust wings are based on digital data extracted from the videos of the locust in a wind tunnel. (T*AFSM)
  • artery-wwo-ane-1
    Artery with / without Aneurysm
    FSI modeling of a carotid artery with an aneurysm and with the aneurysm removed. The artery shape is determined by locally varying fluid traction, which are in turn determined by a blood circulation model of the downstream pressure. (T*AFSM)
  • artery-pistol-io
    Artery with Aneurysm (4 outlets)
    FSI modeling of a cerebral artery with an aneurysm. The artery shape is determined by locally varying fluid tractions, which are in turn determined by a blood circulation model of the downstream pressure. (T*AFSM)
  • artery
    Artery with Aneurysm
    FSI modeling of a middle cerebral artery with an aneurysm. The artery shape is determined by locally varying fluid tractions, which are in turn determined by a blood circulation model of the downstream pressure. See more details T*AFSM.


  • dgb_tkanai
    (日本語) 金井の研究が第57回科学技術週間 科学技術の「美」パネル展に選出
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. 金井太郎の応募作品「火星でのDisk-Gap-Bandパラシュート」が第57回科学技術週間 科学技術の「美」パネル展に選出されました。 平成28年4月18日(月)〜28日(木)に文部科学省 情報ひろば (旧文部省庁舎 1Fラウンジ)に展示されます。 詳細はこちらの最下端「ラウンジ」をご参照ください。
  • 2p_cluster
    Two-Parachute Cluster
    Cluster of the Orion Spacecraft main parachutes. We are using FSI modeling to evaluate the performance of two-parachute clusters. We found that the location of the parachute-payload connection point is an important factor in cluster dynamics. (T*AFSM)
  • sky2nd-L
    Parachute Disreefing
    Disreefing of the Orion Spacecraft main parachute. Disreefing from Stage 2 to full open.
  • 3p_cluster-1
    Three-Parachute Cluster
    Cluster of the Orion Spacecraft main parachutes. We are using FSI modeling to evaluate the performance of three-parachute clusters. (T*AFSM)
  • 4g_near
    NASA Ringsail Parachute (Detail)
    Detailed fluid dynamics computation of a ringsail parachute for the Orion project. The ringsail parachute is a very complex geometry because it has several gaps and holes that contribute to geometric porosity. The geometric porosity affects aerodynamic performance including vertical descent speed and gliding characteristics of the parachute. This computation includes all gaps and holes to ...
  • pa-swing-wp
    New Parachutes for the NASA Orion Spacecraft
    Flow visualization around a ringsail parachute using massless particles. FSI modeling of a ringsail parachute for the Orion project. This parachute is the original design and the performance is in good agreement with drop tests carried out by NASA. (T*AFSM)
  • m5
    NASA Ringsail Parachute
    Flow visualization around a ringsail parachute using massless particles. This is a design study. Removing the fifth ring makes the parachute more stable. See more details T*AFSM.


  • (日本語) 大森が第30回数値流体シンポジウムで発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. “Flow Analysis of an Engine Cylinder and Moving Piston with theSpace–Time Isogeometric Method” というタイトルで発表します。 大森正也、倉石孝、滝沢研二、Tayfun Tezduyar 第30回数値流体シンポジウム 東京、タワーホール船堀 OS3-5 エネルギーに関連する流れ
  • (日本語) 倉石が第30回数値流体シンポジウムで発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. “Tire Aerodynamic Analysis and Verification withthe Space-Time Slip Interface Topology Change(ST-SI-TC) Method and NURBS in Space” というタイトルで発表します。 倉石孝、滝沢研二、Tayfun Tezduyar 第30回数値流体シンポジウム 東京、タワーホール船堀 E08-4 OS3-3 輸送用機械に関する流れ
  • (日本語) 大原が日本機械学会 第94期流体工学部門講演会で発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. “フィルターを含む排気システムのマルチスケール熱流体解析” というタイトルで発表します。 大原 崇裕、乙黒 雄斗、滝沢 研二、Tayfun Tezduyar 日本機械学会 第94期流体工学部門講演会 山口大学、山口 OS1-3 管内流・内部流、0115、13:00~14:15
  • (日本語) 倉石がUSACM Conference on Isogeometric Analysis and Meshfree Methodsで発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. ”Tire Aerodynamic Analysis with the Space-Time Slip Interface Topology Change (ST-SI-TC) Method and NURBS in Space” というタイトルで発表します。 Takashi Kuraishi*, Kenji Takizawa, Tayfun E. Tezduyar USACM Conference on Isogeometric Analysis and Meshfree Methods, Estancia La Jolla Hotel and Spa, Technical ...
  • brake_rm
    Thermo-fluid analysis and heat conduction analysis of a disk brake
    We first do the thermo-fluid analysis of the flow around the disk brake for a finite set of rotor speeds, and then, with the heat transfer coefficient coming from the thermo-fluid analysis, do the heat conduction analysis of the rotor. We do this from the start of the breaking until the rotor spinning stops. See more ...
  • truck_local
    Thermo-fluid analysis of a ground vehicle and its tires
    Thermo-fluid analysis of a truck under road condition. In this thermo-fluid analysis, we use a road-surface temperature higher than the free-stream temperature, and a tire-surface temperature that is even higher. We also include in the analysis the heat from the engine and exhaust system, with a reasonably realistic representation of the rate by which that heat ...
  • (日本語) 倉石が第21回計算工学講演会で発表予定
    Sorry, this entry is only available in Japanese. For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language. “Flow analysis with actual tire geometry, tire deformation and road contact” というタイトルで発表します。 倉石 孝、滝沢 研二、浅田 奨平、Tayfun E. Tezduyar 第21回計算工学講演会 朱鷺メッセ、新潟 OS27 自動車CAE、D-6-3、10:30~11:45
  • 乙黒が第21回計算工学講演会で発表予定
    “数値解析による脈動流を伴うターボチャージャータービンの性能評価” というタイトルで発表します。 乙黒 雄斗、滝沢 研二、Tayfun E. Tezduyar、望月寛己 第21回計算工学講演会 朱鷺メッセ、新潟 OS27 自動車CAE、D-6-2、10:30~11:45  
  • 067481cvr
    Textbook on computational FSI authored by Takizawa has been translated to Japanese
    Wiley textbook on computational FSI, authored by Takizawa has been translated to Japanese by Morikita Publishing Company. See here for more details.
  • wt0000
    Wind-Turbine Rotor Aerodynamics
    NREL 5MW offshore baseline wind turbine. A 61 m blade is attached to a hub with radius of 2 m, making the total rotor radius 63 m. (T*AFSM)


  • tire_tafsm
    Space–Time Slip Interface and Topology Change (ST-SI-TC) method
    The ST-SI-TC method is based on ST-SI and ST-TC methods combined. The ST-SI-TC method we introduce here integrates the ST-SI and ST-TC methods in the ST-VMS framework. It enables accurate flow analysis when we have a spinning solid surface that is in contact with a solid surface. See more details .
  • brake_rm
    Thermo-fluid analysis and heat conduction analysis of a disk brake
    We first do the thermo-fluid analysis of the flow around the disk brake for a finite set of rotor speeds, and then, with the heat transfer coefficient coming from the thermo-fluid analysis, do the heat conduction analysis of the rotor. We do this from the start of the breaking until the rotor spinning stops. See more ...
  • TSR4_P_FM
    Space–Time Slip Interface (ST-SI) method
    The ST-SI method can handle spinning structure of subdomains without remeshing. The method is intended for fluid-structure interaction (FSI) analysis where one or more of the subdomains contain spinning structures, such as the rotor of a wind turbine, and the subdomains are covered by meshes that do not match at the interface and have slip between ...
  • truck_local
    Thermo-fluid analysis of a ground vehicle and its tires
    Thermo-fluid analysis of a truck under road condition. In this thermo-fluid analysis, we use a road-surface temperature higher than the free-stream temperature, and a tire-surface temperature that is even higher. We also include in the analysis the heat from the engine and exhaust system, with a reasonably realistic representation of the rate by which that heat ...
  • ST-TC-2D
    Space–Time Topology Change (ST-TC) method
    The ST-TC method can handle an actual contact between the solid surfaces as an interface-tracking method. The challenges include contact between moving solid surfaces and other cases of topology change (TC), such as those in cardiovascular FSI, parachute FSI, and flapping-wing aerodynamics. As shown in the movie we are comfortable with concluding that the ST-TC method has the interface-tracking ...
  • koma
    Flow Field around a Spinning “Koma”
    Computation of a spinning koma. The koma is spinning at 1,000 RPM. Best CFD Graphics Award: 3rd Place in 25th CFD Symposium, December 2011, Japan.
  • flap-vort-2
    Aerodynamics of Flapping Wings
    Computation of the aerodynamics of locust flapping wings. The prescribed motion and deformation of the locust wings are based on digital data extracted from the videos of the locust in a wind tunnel. (T*AFSM)
  • windsock-cut0494
    Windsock
    Wind blows a windsock. The half windsock is for visualization only. FSI modeling of a windsock. The main purpose of this computation is to demonstrate a technique for handling a kink propagating from upstream to downstream. See more details T*AFSM.