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UCL Department of Chemical Engineering

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Jianhao Yu

Jianhao Yu received his Bachelor's degree in Chemical Engineering and Technology from Beijing University of Chemical Technology in 2012. Then he worked for China National Tyre Quality Supervision and Inspection Center as a junior engineer for 2 years. After that he decided to go UK to study. He got his Master’s degree in Engineering Business Management from University of Warwick in 2015. And now he is studying in UCL as a PhD student in Chemical Engineering.

Research project

Title: Transient flow modelling following the rupture of subsea pipelines

Following the accidental rupture of a high pressure sub-sea pipeline, choked flow is initially observed, followed by subsonic flow, and finally pressure equilibrated density-driven flow marked by the ingress of seawater into the pipeline.

The formulation of the first two flow regimes is well-established. This project deals with the development of a transient flow model for simulating the density driven flow following the rupture of sub-sea hydrocarbon or CO2 pipelines. Accounting for such type of flow is important from safety and environmental pollution points of view given that as much of as 50% of the total initial inventory in the pipeline may be lost during this flow regime.

The project will require the development of a transient flow model for the calculation the balance of forces between the escaping fluid and the sea water, including the tracking of the ingress seawater/gas interface inside the leaking pipe. Where possible the models predictions will be compared against available experimental data for validation purposes.

Education

BEng in Chemical Engineering and Technology, Beijing University of Chemical Technology, China, 2008-2012
MSc in Engineering Business Management, University of Warwick, 2014-2015
Phd in Chemical Engineering, UCL, 2016-