modeFRONTIER for Virtual Design and Optimization of Compact Heat Exchangers

Carriglio, Marco; Clarich, Alberto; Russo, Rosario; Ranut, Paola

doi:10.4271/2014-01-2406

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…The code is widely used in engineering applications and is demonstrated to be suitable for several technical problems [17][18][19][20]. The applied loading conditions are different between unfolded and folded configuration.…”

Section: Optimization Analysismentioning

confidence: 99%

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

et al. 2021

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Re-entry winged body vehicles have several advantages w.r.t capsules, such as maneuverability and controlled landing opportunity. On the other hand, they show an increment in design level complexity, especially from an aerodynamic, aero-thermodynamic, and structural point of view, and in the difficulties of housing in operative existing launchers. In this framework, the idea of designing unmanned vehicles equipped with deployable wings for suborbital flight was born. This work details a preliminary study for identifying the best configuration for the hinge system aimed at the in-orbit deployment of an unmanned re-entry vehicle’s wings. In particular, the adopted optimization methodology is described. The adopted approach uses a genetic algorithm available in commercial software in conjunction with fully parametric models created in FEM environments and, in particular, it can optimize the hinge position considering both the deployed and folded configuration. The results identify the best hinge configuration that minimizes interface loads, thus, realizing a lighter and more efficient deployment system. Indeed, for such a category of vehicle, it is mandatory to reduce the structural mass, as much as possible in order to increase the payload and reduce service costs.

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Section: Optimization Analysismentioning

confidence: 99%

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

et al. 2021

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“…The service brake should then satisfy the insufficient braking torque of the auxiliary braking system, thus reducing the braking capacity of the service brake for emergency braking conditions. Saleh et al 5 and Carriglio et al 6 optimized the structure of the exchanger. Despite the increased efficiency, their solution only delays but does not eliminate the heat accumulation.…”

Section: Introductionmentioning

confidence: 99%

“…5 and Carriglio et al. 6 optimized the structure of the exchanger. Despite the increased efficiency, their solution only delays but does not eliminate the heat accumulation.…”

Section: Introductionmentioning

confidence: 99%

Designing the main controller of auxiliary braking systems for heavy-duty vehicles in nonemergency braking conditions

Zheng

Lei

Song

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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With the development of the road industry, heavy-duty vehicles now require additional braking power to fulfill their braking requirements. Auxiliary braking systems, which include a hydraulic retarder and an engine brake, can provide additional braking force in nonemergency braking conditions. A water medium retarder is a new type of hydraulic retarder that can convert the kinetic energy of a vehicle into the thermal energy of coolant. This study introduces a novel auxiliary braking system involving a water medium retarder and an engine brake for heavy-duty vehicles. The specific forces of heavy-duty vehicles and the auxiliary braking system are established. The control logic of the novel auxiliary braking system is assigned, and a main controller is designed to dynamically manage the entire braking process. The main controller includes controllers A and B, which handles the engine brake and water medium retarder, respectively. The heavy-duty vehicles dynamic system model is created using MATLAB/Simulink. Upon performance testing, simulation results show that the designed main controller can effectively and rapidly manage the auxiliary braking system, thus satisfying the braking requirements in any nonemergency braking condition. Even when the slope of a road changes, the main controller can extract dynamical forces as well as acceleration parameters and fulfill the braking requirements of vehicles.

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“…These phenomena prevent the heat of the OM retarder from transferring to coolant circulation and inhibit the retarder from constantly producing a braking torque. Saleh et al 11 and Carriglio et al 12 optimized the structure of the exchanger to increase its efficiency. However, this approach only delays but does not eliminate heat accumulation.…”

Section: Introductionmentioning

confidence: 99%

Design of the filling-rate controller for water medium retarders on the basis of coolant circulation

Zheng

Lei

Song

2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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Water medium retarders are auxiliary braking devices which can reduce the vehicle speed by converting the mechanical energy of a driving vehicle to the total energy of the working fluid. These retarders can replace service brakes in nonemergency braking conditions. This study analysed the dynamic and thermodynamic characteristics of water medium retarders. An observer was designed to identify the optimal braking power of the water medium retarder under different braking conditions. The braking process involving the retarder can be divided into three stages. The controller was designed separately at each stage to control the braking torque of the water medium retarder according to braking requirements. A combined dynamic and thermodynamic vehicle model was also constructed with MATLAB/Simulink. The effects of the controller on the vehicle feedback control system were analysed. The results show that the controller equipped with the observer can effectively control the water medium retarder to satisfy the braking requirements of vehicles on the assumption that the coolant circulation is sufficiently radiated. Finally, an experiment was conducted to determine the performance of the controller and to validate the simulation results.

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modeFRONTIER for Virtual Design and Optimization of Compact Heat Exchangers

Cited by 6 publications

References 8 publications

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

Design Optimization of Interfacing Attachments for the Deployable Wing of an Unmanned Re-Entry Vehicle

Designing the main controller of auxiliary braking systems for heavy-duty vehicles in nonemergency braking conditions

Design of the filling-rate controller for water medium retarders on the basis of coolant circulation

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