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RISComputing Schemes for Longitudinal Train Dynamics: Sequential, Parallel and Hybrid
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Conventionally, force elements in longitudinal train dynamics (LTD) are determined sequentially. Actually, all these force elements are independent from each other, i.e., determination of each one does not require inputs ...
A Real-Time Fluid Dynamic Air Brake Model for Long Heavy Haul Trains
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Practical real-time fluid dynamic air brake models for long heavy haul trains have not been reported in open literature. Based on a previous work titled “Railway Air Brake Model and Parallel Computing Scheme” in the same ...
Parallel Computing Enables Whole Trip Train Dynamics Optimizations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to the high computing demand of wholetrip train dynamics simulations and the iterative nature of optimizations, wholetrip train dynamics optimizations using sequential computing schemes are practically impossible. This ...
Parallel Computing Scheme for Three-Dimensional Long Train System Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Simulations of three-dimensional train system dynamics for long freight railway trains with consideration being given to all degrees-of-freedom of all essential components of all vehicles have not been reported due to the ...
Validation of HY-2A Remotely Sensed Wave Heights against Buoy Data and Jason-2 Altimeter Measurements
Publisher: American Meteorological Society
Abstract: he Haiyang-2A (HY-2A; HaiYang means ocean in Chinese) satellite was successfully launched in China on 16 August 2011, carrying the nation?s first operational radar altimeter along with three other microwave sensors. In ...
Block–Wheel–Rail Temperature Assessments Via Longitudinal Train Dynamics Simulations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two research gaps were identified in block–wheel–rail temperature assessment. First, current studies are not combined with train dynamics, which are better descriptions of the block–wheel–rail working environment. Second, ...
Implications of Lateral Coupler Forces for Rail Vehicle Curving Resistance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Curving resistance is an important topic that requires a lot more research. This paper studied the implications of lateral coupler forces for curving resistance. More than 1800 simulations were conducted using a three-piece ...
The Roles of Convection over the Western Maritime Continent and the Philippine Sea in Interannual Variability of Summer Rainfall over Southwest China
Publisher: American Meteorological Society
Abstract: AbstractFloods and droughts hit southwest China (SWC) frequently, especially over the last decade. In this study, the dominant modes of summer rainfall anomalies over SWC on the interannual time scale and the possible ...
Parallel Co-Simulation Method for Railway Vehicle-Track Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper introduces a new parallel co-simulation method to study vehicle-track dynamic interactions. The new method uses the transmission control protocol/internet protocol (TCP/IP) to enable co-simulation between a ...
A Time Headway Control Scheme for Virtually Coupled Heavy Haul Freight Trains
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Virtual coupling of railway trains is an emerging technology that has the potential to significantly increase railway operational efficiency by reducing the train following distance from absolute braking distances to ...