Computational engineering analysis with the new-generation space–time methods

Takizawa, Kenji

doi:10.1007/s00466-014-0999-z

Cited by 105 publications

(73 citation statements)

References 178 publications

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“…The computations reported in 2014 were for bioinspired flapping-wing aerodynamics [101][102][103], patient-specific aneurysms blocked with stent [104], spacecraft parachute FSI [102,105], wind-turbine rotor aerodynamics and rotor and tower aerodynamics [102,103,106], FSI of cerebral arteries with aneurysm [102], and heart valve flow analysis [17]. The spacecraft parachute FSI analyses included clusters of parachutes with the original design and with modified geometry porosity, different designs of the suspension lines, disreefing of a single parachute from Stage 1 to 2 to 3, disreefing of a 2-parachute cluster from Stage 2 to 3, and a drogue parachute at Stage 1, 2 and 3 under different flight conditions.…”

Section: Years 2011-2018mentioning

confidence: 99%

Space–time computations in practical engineering applications: a summary of the 25-year history

Tezduyar

Takizawa

2018

Comput Mech

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In an article published online in July 2018 it was stated that the algorithm proposed in the article is "enabling practical implementation of the space-time FEM for engineering applications." In fact, space-time computations in practical engineering applications were already enabled in 1993. We summarize the computations that have taken place since then. These computations started with finite element discretization and are now also with isogeometric discretization. They were all in 3D space and were all carried out on parallel computers. For quarter of a century, these computations brought solution to many classes of complex problems ranging from Orion spacecraft parachutes to wind turbines, from patient-specific cerebral aneurysms to heart valves, from thermo-fluid analysis of ground vehicles and tires to turbocharger turbines and exhaust manifolds.

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Section: Years 2011-2018mentioning

confidence: 99%

Space–time computations in practical engineering applications: a summary of the 25-year history

Tezduyar

Takizawa

2018

Comput Mech

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“…A recently developed set of space-time (ST) methods can serve as a third alternative in dealing with objects in relative motion. The components of this set include the ST/NURBS mesh update method [17,59,60], ST interface tracking with topology change [61], and ST computation technique with continuous representation in time [62].…”

Section: Discretization and Special Fsi Techniques Formentioning

confidence: 99%

Fluid–Structure Interaction Modeling of Vertical-Axis Wind Turbines

Bazilevs

Korobenko

Deng

et al. 2014

Journal of Applied Mechanics

123

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Full-scale, 3D, time-dependent aerodynamics and fluid-structure interaction (FSI) simulations of a Darrieus-type vertical-axis wind turbine (VAWT) are presented. A structural model of the Windspire VAWT (Windspire energy, http://www.windspireenergy.com/) is developed, which makes use of the recently proposed rotation-free Kirchhoff-Love shell and beam/cable formulations. A moving-domain finite-element-based ALE-VMS (arbitrary Lagrangian-Eulerian-variational-multiscale) formulation is employed for the aerodynamics in combination with the sliding-interface formulation to handle the VAWT mechanical components in relative motion. The sliding-interface formulation is augmented to handle nonstationary cylindrical sliding interfaces, which are needed for the FSI modeling of VAWTs. The computational results presented show good agreement with the field-test data. Additionally, several scenarios are considered to investigate the transient VAWT response and the issues related to self-starting.

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“…These desirable features do not come easily or do not come at all with the interface-capturing (nonmoving-mesh) methods. Comments on and examples for what the DSD/SST method brings to the table beyond what the ALE method does can be found in [4], and also in [4,[10][11][12]60,64,66,[68][69][70][71][72][73], including examples from aerodynamics of flapping wings and wind turbines and fluid mechanics of heart valves.…”

Section: Introductionmentioning

confidence: 97%

“…Examples, with the cited references reporting recent computations, are spacecraft aerodynamics [53], spacecraft parachutes [12,[54][55][56][57][58][59][60], cardiovascular fluid mechanics [4,[60][61][62][63][64][65][66][67], flapping-wing aerodynamics [4,60,64,[68][69][70], wind-turbine aerodynamics [60,64,71,72], and data compression [73].…”

Section: Introductionmentioning

confidence: 99%

Space–time computational analysis of MAV flapping-wing aerodynamics with wing clapping

2015

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Computational analysis of flapping-wing aerodynamics with wing clapping was one of the classes of computations targeted in introducing the space-time (ST) interface-tracking method with topology change (ST-TC). The ST-TC method is a new version of the deforming-spatialdomain/stabilized ST (DSD/SST) method, enhanced with a master-slave system that maintains the connectivity of the "parent" fluid mechanics mesh when there is contact between the moving interfaces. With that enhancement and because of its ST nature, the ST-TC method can deal with an actual contact between solid surfaces in flow problems with moving interfaces. It accomplishes that while still possessing the desirable features of interface-tracking (moving-mesh) methods, such as better resolution of the boundary layers. Earlier versions of the DSD/SST method, with effective mesh update, were already able to handle moving-interface problems when the solid surfaces are in near contact or create near TC. Flapping-wing aerodynamics of an actual locust, with the forewings and hindwings crossing each other very close and creating near TC, is an example of successfully computed problems. Flapping-wing aerodynamics of a micro aerial vehicle (MAV) with the wings of an actual locust is another example. Here we show how the ST-TC method enables 3D computational analysis of flapping-wing aerodynamics of an MAV with wing clapping. In the analysis,

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Computational engineering analysis with the new-generation space–time methods

Cited by 105 publications

References 178 publications

Space–time computations in practical engineering applications: a summary of the 25-year history

Space–time computations in practical engineering applications: a summary of the 25-year history

Fluid–Structure Interaction Modeling of Vertical-Axis Wind Turbines

Space–time computational analysis of MAV flapping-wing aerodynamics with wing clapping

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