Comparison of One-Dimensional and Quasi-Two-Dimensional Friction Models for Hydraulic Transient Response and Energy Dissipation in Viscoelastic Pipelines at Different Water Temperatures
- 1Northeast Forestry University , , ,
- 2China Agricultural University , , ,
Abstract
In chemical process systems, high-density polyethylene (HDPE) piping is widely used for conveying thermally conditioned liquids because of its corrosion resistance and operational flexibility; however, its pronounced viscoelastic response during hydraulic transients can strongly affect pressure regulation, process safety, and pipeline integrity, particularly under temperature-varying operating conditions. The temperature-dependent evolution of viscoelastic parameters, the differences between transient-flow models, and the associated energy-dissipation mechanisms remain insufficiently clarified for chemical engineering applications. In this study, transient-flow experiments in HDPE pipes at 20–40 °C were combined with numerical simulations using a one-dimensional quasi-steady friction model and a quasi-2D (quasi-two-dimensional) friction model. The first-peak occurrence time remained nearly constant at 0.1179 ± 0.0129 s, while the later response, particularly the third peak, was progressively delayed. The identified effective creep-compliance parameters increased overall with temperature and exhibited finite model-conditional admissible ranges. Model-based energy decomposition indicated that the calculated temperature-induced increase in total dissipation was governed primarily by the viscoelastic term WP, whereas the calculated frictional term Df varied comparatively little; the kinetic–elastic energy-exchange process also became shorter at elevated temperatures. The quasi-two-dimensional model did not yield a uniformly lower pressure-history RMSE, but its radial resolution of axial velocity and near-wall shear revealed model-dependent Df/WP partitions that became pronounced at 35–40 °C. These findings clarify the coupled effects of temperature and viscoelasticity on transient flow in polymer process pipelines and provide a mechanistic basis for model selection, pressure-surge control, and the safe operation of chemical-engineering piping systems.
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BibTeX
@article{li2026comparison,
title = {{Comparison of One-Dimensional and Quasi-Two-Dimensional Friction Models for Hydraulic Transient Response and Energy Dissipation in Viscoelastic Pipelines at Different Water Temperatures}},
author = {Wuhong Li and Qiang Sun and Zongku Liu and Wei Zeng},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c05318},
url = {https://pubs.acs.org/acsodf/article/11/42/64779/5451575/Comparison-of-One-Dimensional-and-Quasi-Two},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - JOUR
TI - Comparison of One-Dimensional and Quasi-Two-Dimensional Friction Models for Hydraulic Transient Response and Energy Dissipation in Viscoelastic Pipelines at Different Water Temperatures
AU - Wuhong Li
AU - Qiang Sun
AU - Zongku Liu
AU - Wei Zeng
PY - 2026
DA - 2026/10/14
JO - ACS Omega
DO - 10.1021/acsomega.6c05318
UR - https://pubs.acs.org/acsodf/article/11/42/64779/5451575/Comparison-of-One-Dimensional-and-Quasi-Two
AB - In chemical process systems, high-density polyethylene (HDPE) piping is widely used for conveying thermally conditioned liquids because of its corrosion resistance and operational flexibility; however, its pronounced viscoelastic response during hydraulic transients can strongly affect pressure regulation, process safety, and pipeline integrity, particularly under temperature-varying operating conditions. The temperature-dependent evolution of viscoelastic parameters, the differences between transient-flow models, and the associated energy-dissipation mechanisms remain insufficiently clarified for chemical engineering applications. In this study, transient-flow experiments in HDPE pipes at 20–40 °C were combined with numerical simulations using a one-dimensional quasi-steady friction model and a quasi-2D (quasi-two-dimensional) friction model. The first-peak occurrence time remained nearly constant at 0.1179 ± 0.0129 s, while the later response, particularly the third peak, was progressively delayed. The identified effective creep-compliance parameters increased overall with temperature and exhibited finite model-conditional admissible ranges. Model-based energy decomposition indicated that the calculated temperature-induced increase in total dissipation was governed primarily by the viscoelastic term WP, whereas the calculated frictional term Df varied comparatively little; the kinetic–elastic energy-exchange process also became shorter at elevated temperatures. The quasi-two-dimensional model did not yield a uniformly lower pressure-history RMSE, but its radial resolution of axial velocity and near-wall shear revealed model-dependent Df/WP partitions that became pronounced at 35–40 °C. These findings clarify the coupled effects of temperature and viscoelasticity on transient flow in polymer process pipelines and provide a mechanistic basis for model selection, pressure-surge control, and the safe operation of chemical-engineering piping systems.
SN - 2470-1343
ER -