Search citation statements
Paper Sections
Citation Types
Year Published
Publication Types
Relationship
Authors
Journals
A contractual design of cross‐flow heat exchanger with concave/convex fins under fixed pressure drop is presented in this paper. An array of heated concave and convex fins are placed in a fixed area, and they are cooled by incoming cross flow, which is moving towards the fins due to constant pressure drop. The distances from fin to fin, the fin base, and the fin surface curvature (concave and convex) are free to morph and are constrained by the fin length and the height of cross flow. Bejan's number ranges from 105 to 107. The ratio of fin base‐to‐fin length is changed from 0.1 to 0.3. The dimensionless mass, momentum, and energy equations for two‐dimensional, steady, and incompressible flow are solved based on the finite volume numerical method. Also, the scale analysis method is used to compare heat transfer densities from concave and convex fins. The numerical results showed that the maximal convective heat transfer density for convex fins is higher than that of the concave fins for all Bejan numbers. The augmentations in the maximal heat transfer density are 2.1% at Be = 105, 4% at Be = 106, and 12.5% at Be = 107. Also, this is confirmed by the scale analysis method.
A contractual design of cross‐flow heat exchanger with concave/convex fins under fixed pressure drop is presented in this paper. An array of heated concave and convex fins are placed in a fixed area, and they are cooled by incoming cross flow, which is moving towards the fins due to constant pressure drop. The distances from fin to fin, the fin base, and the fin surface curvature (concave and convex) are free to morph and are constrained by the fin length and the height of cross flow. Bejan's number ranges from 105 to 107. The ratio of fin base‐to‐fin length is changed from 0.1 to 0.3. The dimensionless mass, momentum, and energy equations for two‐dimensional, steady, and incompressible flow are solved based on the finite volume numerical method. Also, the scale analysis method is used to compare heat transfer densities from concave and convex fins. The numerical results showed that the maximal convective heat transfer density for convex fins is higher than that of the concave fins for all Bejan numbers. The augmentations in the maximal heat transfer density are 2.1% at Be = 105, 4% at Be = 106, and 12.5% at Be = 107. Also, this is confirmed by the scale analysis method.
The manufacturing of automobile moulds is itself a challenging job and very tedious task requiring high accuracy of component profiles. The required complicated and complex profiles are generated when the mould inserts are relinquished from several numbers of workstations, which run for a longer process time. As the accuracy needed for the component area is very high and it (insert) has to pass through several bottleneck workstations, the production time and increased buffer time are observed. This chapter focuses on providing economical methods for manufacturing hot die steel inserts. These techniques are implemented on a pressure die-casting insert component. The present solution is derived for manufacturing time reduction and minimisation of the die-casting inserts (moving and fixed die) at every stage. Implementing combined electrodes, assembly machining and cluster plate machining/sparking techniques are critical development advancements in the research. In the combined electrode concept, one electrode is designed in the same area to cover multiple areas that were initially covered by separate individual electrodes. Furthermore, this concept is outstretched by the cluster plate concept. Those electrodes that cannot be covered by a single electrode are machined together to act as a single electrode and later separated while individual sparking. Combined electrode design, assembly machining and cluster machining/sparking of the electrodes reduce the total machining time of the die and the machining centre. Reducing the machine run time will reduce the production cost and increase profit. The results achieved show that the combined electrode design setup shows 75% savings in the combined sparking setup, whereas the cluster plate machining setup shows 35% savings in the tool list generation (from software used) of the net savings. The proposed solution opens up new avenues for similar automobile components by setting benchmarks to decrease the rope length associated with manufacturing and increase profit.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.