Fluid flow distribution and pressure drop in split P lattice TPMS structures with varying wall thickness / S.U Zainal ... [et al.]

Zainal, S.U and Manurung, Yupiter HP and Adenan, Mohd Shahriman and Mohamad, Mohd Faizal and Wan Mohamed, Wan Ahmad Najmi (2025) Fluid flow distribution and pressure drop in split P lattice TPMS structures with varying wall thickness / S.U Zainal ... [et al.]. Journal of Mechanical Engineering (JMechE), 22 (2): 14. pp. 191-208. ISSN e-ISSN: 2550-164X

Abstract

Design for additive manufacturing (DfAM) has enabled the creation of complex lattice structures using selective laser melting (SLM) in additive manufacturing (AM). This study focuses on triply periodic minimal surfaces (TPMS), specifically the split P lattice, which optimizes fluid flow in gas-solid contacting systems for carbon capture applications. The TPMS design enhances gas interaction with large surface areas, crucial for improving mass transfer in chemical processes. Despite significant research on TPMS structures, comprehensive fluid flow analysis for split P lattices in direct air capture (DAC) systems remains limited. This study investigates the effects of varying wall thicknesses (0.4 mm, 0.8 mm, and 1.2 mm) under laminar flow conditions in 5 mm unit cells, across Reynolds numbers (Re) ranging from 25 to 125. Results show that the TPMS structure increases the surface area by 35% and boosts inlet velocity up to fourfold. Thicker walls lead to higher pressure drops and localized acceleration, resulting in a higher velocity profile within smaller pores. The 0.8 mm wall thickness demonstrated the best balance, offering superior area-averaged velocity and uniform flow distribution. Compared to previous TPMS studies, the split P lattice design achieves a more uniform distribution and improved permeability, making it a promising solution for DAC reactor performance.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Zainal, S.U
UNSPECIFIED
Manurung, Yupiter HP
UNSPECIFIED
Adenan, Mohd Shahriman
mshahriman@uitm.edu.my
Mohamad, Mohd Faizal
UNSPECIFIED
Wan Mohamed, Wan Ahmad Najmi
UNSPECIFIED
Subjects: T Technology > TA Engineering. Civil engineering > Fluid dynamics
Divisions: Universiti Teknologi MARA, Shah Alam > College of Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journals > Journal of Mechanical Engineering (JMechE)
ISSN: e-ISSN: 2550-164X
Volume: 22
Number: 2
Page Range: pp. 191-208
Keywords: Direct air capture, carbon capturec triply periodic minimal surface (TPMS), computational fluid dynamics (CFD), split P lattice
Date: May 2025
URI: https://ir.uitm.edu.my/id/eprint/116655
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