relative velocity and meshing efficiency for a novel

Numerical study of mixing dynamics inside the novel

A 2D geometry model was established and numerical simulation results revealed the superiority of distributive and dispersive mixing of such a novel screw design 3 Further experimental investigations were carried out to examine the mixing details using immiscible polymer blends and the results confirmed that better mixing was achieved in these

Comparison of Borehole Heat Exchangers (BHEs): State of

2012-3-7Abstract: The efficiency of borehole heat exchangers (BHEs) for geothermal purposes assume a mean velocity in the pipe and to calculate an effective thermal conductivity of performance of the novel designs increases relative to the common ones

Configuration Synthesis and Performance Analysis of

2020-6-26Current research of automatic transmission (AT) mainly focuses on the improvement of driving performance and configuration innovation is one of the main research directions However finding new configurations of ATs is one of the main limitations of configuration innovation In the present study epicyclic gear trains (EGTs) are applied to investigate mechanisms of 9-speed ATs

Dynamic Analysis and Simulation of a Roller Chain Drive

2018-12-29has rapid change meshing with the sprockets for the meshing impact Fig 4 The rotational velocity and acceleration curve of sprocket1 Fig 5 The velocity and position curve of chain link 40 Fig 6 The acceleration curve of chain link 40 In fig 7 is shown the bushing tension in the links which connect the two sprockets with the two spans

V A PC

2013-8-30velocity along the shroud together with the the (R'V ) distribution determine the 'Critical' shroudline suction side velocity according to Eq (13) d) Evaluate the F- and G- terms of equation 2 3 e) Integrate equation (1) (Eq (4)) with the constant of integration is set by the imposed shroud meridional velocity

JOURNAL OF SHANGHAI JIAO TONG UNIVERSITY

2020-7-20The relative errors of second-order Stokes wave in amplitude and phase comparing with traditional results are discussed under different relative depths and different nonlinearity conditions Then a further simulation of the solitary waves propagation is performed

Christopher Rutland

A novel 2-zone combustion system was examined at medium load operation consistent with loads in the light duty vehicle drive cycle (7 6 bar BMEP and 2600 rev/min) Pressure rise rate and noise can limit the part of the engine map where pre-mixed combustion strategies such as HCCI or RCCI can be used

CORE

A novel continuum formulation of the linear elastodynamic contact problem also supports the SDG finite element model In contrast to previous contact models that invoke quasi-static contact conditions the proposed model enforces dynamic contact conditions by prescribing momentum flux and compatibility conditions obtained from the local Riemann

Electric vehicle energy consumption simulation by

2016-5-1The next section considers theoretical aspects in particular mechanical losses which are divided into load-dependent losses and spin losses Section 3 presents the simulation model which is a comprehensive EV driveline model built by applying a novel real-time efficiency calculator for

Impact analysis and vibration reduction design of

2019-9-12However the meshing point deviates from the center of the tooth surface with the increase in the load torque and there is a decrease in the meshing stiffness of the initial meshing point It can be seen from equation (2) that the meshing impact is determined mainly by the impact velocity and meshing stiffness When the gear is in contact with

Development of a rotational meshing actuator for in

The rotation velocity for driving the life support tools was varied from 2 0 to 3 5 rad/s As explained above the rotation of the A-Gear is transmitted to the P-Gear by meshing the two gears The transferred rotation activates the mechanical tool or end effector connected to the P-Gear

Dynamic Crushing Analysis of a Three

3 Dynamic Crushing Modes As indicated in previous publications [26 27 28] the crushing modes for regular hexagonal honeycombs with same relative density are highly dependent on the crushing velocity Inspired by this work keeping a constant ρ R = 1 % dynamic crushing simulation of the 3D re-entrant auxetic cellular structure has been performed under a wide range of crushing velocity v c

Effect of inlet velocity on heat transfer process in a

2020-5-29Effect of inlet velocity on heat transfer process in a novel photo-fermentation biohydrogen production bioreactor using computational fluid dynamics simulation BioRes 10(1) 469-481 Abstract Temperature is one of the most important parameters in biohydrogen production by way of

A New Design Methodology for Hydraulic Cross

An extensive amount of research has been conducted on hydraulic Cross-Flow turbine over the past decades in order to improve its performance but in several cases results are contradictory and little has been mentioned about the design process so a universal coherent methodology for designing a Cross-Flow turbine given the water head and volume flow rate seems most needed

Electric vehicle energy consumption simulation by

2016-5-1The next section considers theoretical aspects in particular mechanical losses which are divided into load-dependent losses and spin losses Section 3 presents the simulation model which is a comprehensive EV driveline model built by applying a novel real-time efficiency calculator for

CFD: Turbomachines centrifugal pump blowers MRF

2018-8-18CFD Simulation approaches for Turbomachines Multiple Reference Frame Sliding Mesh Motion CFD simulation approach for turbomachines as such centrifugal pump and blowers appropriateness of various modeling approaches such as Single Reference Frame (SRF) Multiple Reference Frame (MRF) or Frozen Rotor Method Sliding Mesh Motion (SMM) and application to

Smashing the Efficiency Barrier

Smashing the Efficiency Barrier — A Practical Comparison of Planetary and Orbitless Gear-Heads Leo J Stocco and Robert Gloeckner Introduction An Orbitless (patent pending) gear-head is a novel fixed-ratio epicyclic gear-head with crank-shaft planet pinions and two carriers but no ring gear

MESHING ANALYSIS IN CASE OF NONCIRCULAR GEARS

2017-8-1relative velocity is defined by: 12 1 2 21 2 1 in in r ds vr d ri lr (3) In case of the conventional crank-slider mechanism whose rotational motion is achieved from a standard spur gear train with a constant and unitary transmission ratio the slider displacement and the relative velocity vary as shown in figure 2 (curves sc v r c) x y O 2 1

CFD analysis of three and four blades movable vanes type

2016-10-27Fig 4 shows the velocity contours for three and four blades rotor at 0 and 45blade angular positions The velocity in the region of wind turbine rotor is much larger than that in the upstream or air flow However the velocity of wake away from the rotor is smaller than the velocity of upstream air flow This phenomenon is mainly caused by the

Efficient simulation of a low

2018-3-22Like the velocity WSS depicted on the aneurysm and parent vessel were similar in the two models (Fig 3) Regions of low or high WSS especially visualized from the anterior and posterior views were matched perfectly as to locations and area sizes (Fig 3a–d) On the top view there was a slight difference in WSS distribution showing larger low-WSS areas in the aneurysm dome

Development of a rotational meshing actuator for in

We have designed a rotational meshing actuator for a life support system based on a mobile robot The present paper explains the basic concept of the actuator and its design details The actuator comprises a motor-controlled active mechanism mated with a passive mechanism The trident pin on top of the active mechanism engages with a similar

Dynamic analysis of torus involute gear including

The torus involute gear can compensate large axial misalignments and may possess good meshing characteristics without lead correction In order to study its dynamic characteristics and verify its feasibility of the practical application a new efficient rigid-elastic coupling dynamic model of multi-tooth is established which includes effects of lubrication oil film and tooth deformations

Development of a rotational meshing actuator for in

The rotation velocity for driving the life support tools was varied from 2 0 to 3 5 rad/s As explained above the rotation of the A-Gear is transmitted to the P-Gear by meshing the two gears The transferred rotation activates the mechanical tool or end effector connected to the P-Gear

Complete Efficiency Analysis of Epicyclic Gear Train With

2015-3-241 At this input condition all components are rotating at the same angular velocity This means that there is no relative rotation between the engaged gears This results in no gear meshing losses and so the ef?ciency is expected to have a value of 1 under this

GUDXOLFSXPS

1 2 Meshing For meshing and analysis projection Fluent and CFD Ansys software being applied in this study as being shown by figure 6 Tetrahedrons type mesh is used for the assembly meshing method as they are easy to create automatically while the generation of other type elements is very difficult for complex shapes such as those being designated