Next Article in Journal
Assessing the Benefits of Forested Riparian Zones: A Qualitative Index of Riparian Integrity Is Positively Associated with Ecological Status in European Streams
Next Article in Special Issue
Zonation of Positively Buoyant Jets Interacting with the Water-Free Surface Quantified by Physical and Numerical Modelling
Previous Article in Journal
Photocatalytic Evaluation of Ag2CO3 for Ethylparaben Degradation in Different Water Matrices
Previous Article in Special Issue
Variation of Coefficient of Friction and Friction Head Losses Along a Pipe with Multiple Outlets
Open AccessArticle

Study on Flow Velocity during Wheeled Capsule Hydraulic Transportation in a Horizontal Pipe

College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Author to whom correspondence should be addressed.
Water 2020, 12(4), 1181;
Received: 18 March 2020 / Revised: 15 April 2020 / Accepted: 17 April 2020 / Published: 20 April 2020
(This article belongs to the Special Issue Physical Modelling in Hydraulics Engineering)
As a clean, low-carbon, and green hydraulic transportation technology, wheeled capsule pipeline hydraulic transportation is a transportation mode conducive to the sustainable development of the social economy. Based on the method of a physical model experiment and hydraulic theory, the flow velocity characteristics in the pipeline when the wheeled capsule with a length–diameter ratio of 2.5 and 2.14, respectively, was transported in the straight pipe section with an inner diameter of 100 mm were studied in this paper. The results show that in the process of transporting materials, the flow velocity distribution of the cross section near the upstream and downstream section of the capsule was basically the same, and the axial velocity was smaller in the middle of the pipe and larger near the inner wall of the pipe. The radial velocity distribution was more thinly spread near the pipe wall and denser near the center of the pipe. The circumferential flow velocity was distributed in the vicinity of the support body of the wheeled capsule. For any annular gap section around the wheeled capsule, the radial velocity of annular gap flow was very small, and the average radial velocity of annular gap flow was about 1/30 of the average axial velocity of annular gap flow and about 0.7 of the average circumferential velocity of annular gap flow. The axial, circumferential, and radial flow velocities on the same radius measuring ring changed with the polar axis in a wave pattern of alternating peaks and troughs. These results can provide the theoretical basis for optimizing structural parameters of the wheeled capsule. View Full-Text
Keywords: wheeled capsule; flow velocity; hydraulic transportation; pipeline wheeled capsule; flow velocity; hydraulic transportation; pipeline
Show Figures

Figure 1

MDPI and ACS Style

Li, Y.; Gao, Y.; Sun, X.; Zhang, X. Study on Flow Velocity during Wheeled Capsule Hydraulic Transportation in a Horizontal Pipe. Water 2020, 12, 1181.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop