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RISNonlinear Vibration Characteristics of Bridge Deck Section Models in Still Air
Publisher: American Society of Civil Engineers
Abstract: The mechanical stiffness and damping coefficients of a spring-suspended deck section model in still air are conventionally assumed to be constants and can be extracted through free decay vibrations. The extracted stiffness ...
An Accelerating Sweep Frequency Excitation Method for the Rotordynamic Coefficients Identification of Annular Gas Seals Based on Computational Fluid Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article proposes a rotordynamic identification method using the accelerating sweep frequency excitation method. The computational fluid dynamics transient solution combined with the moving grid method is utilized to ...
Numerical Simulation and Modeling Convention of Unsteady Fluidelastic Forces of Tube Arrays
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a numerical investigation on the unsteady fluidelastic forces of tube arrays. The key focus is on the consistency between the unsteady fluidelastic force model and the quasi-steady model for tube arrays ...
Three-Dimensional Flutter Analysis of Aeroelastic Models of Bridge Decks Based on Large-Eddy Simulations
Publisher: American Society of Civil Engineers
Abstract: AbstractIn light of the limitations of traditional methods based on a sectional deck model
in predicting full-bridge flutter responses, a fluid–structure-interaction simulation
method for directly solving the three-dimensional ...
A Novel Tuned Mass Damper with Negative Stiffness Mechanism for Low-Frequency Vertical Vibration Control
Publisher: American Society of Civil Engineers
Abstract: AbstractConventional tuned mass dampers (TMDs) require substantial static displacement when
designed for low-frequency vertical vibration control, which poses major challenges
in applications where installation space and ...
Turbine Blade Leading Edge Cooling With One Row of Normal or Tangential Impinging Jets
Publisher: The American Society of Mechanical Engineers (ASME)
Influence of Turbine Blade Leading Edge Profile on Film Cooling With Shaped Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the turbine blade leading edge model film cooling effectiveness with shaped holes, using the pressure sensitive paint (PSP) mass transfer analogy method. The effects of leading edge profile, coolant to ...
Numerical Simulation of Aerostatic Force Coefficients of Bridge Decks Using Continuous Torsional Motion Technique
Publisher: American Society of Civil Engineers
Abstract: A low-frequency continuous torsional motion technique (CTMT) is presented to efficiently extract the aerostatic force coefficients (AFCs) of bridge decks. In contrast to the conventional numerical simulations at a series ...
Film Cooling Effectiveness From Two Rows of Compound Angled Cylindrical Holes Using Pressure-Sensitive Paint Technique
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates the effects of blowing ratio, density ratio, and spanwise pitch on the flat plate film cooling from two rows of compound angled cylindrical holes. Two arrangements of two-row compound angled cylindrical ...
Innovative Lithium-Ion Battery Firefighting Cooling Measures Activated by High-Temperature Gas Emission from Safety Valves
Publisher: American Society of Civil Engineers
Abstract: AbstractThermal runaway (TR) of lithium-ion batteries (LIBs) poses a critical safety hazard
to large-scale electrochemical energy storage stations because traditional fire suppression
methods either lack cooling efficiency ...