Graduate Student

Graduate Student – MASc or PhD in Mechanical Engineering Two-Phase Flow Boiling and Condensation of Refrigerants Location: Thermofluids Research Laboratory (TF-LAB), Department of Mechanical Engineering, York University, Toronto, Canada Start date: Spring 2026 or Fall 2026 Project summary We are seeking motivated MASc or PhD students in Mechanical Engineering to join an industrial-sponsored project on two-phase refrigerant flow boiling and condensation. The student will work closely with a post-doctoral researcher who will lead the project and with industrial collaborators. Their work will focus on experimental characterization of flow boiling and condensation, data analysis, and development/assessment of heat transfer and pressure drop correlations for unique flow boiling and condensation test section geometries supporting a wide range of industrial applications. Key responsibilities Working under the supervision of Prof. Kempers and the project post-doctoral researcher, the student will: Assist with the design, operation and refinement of a dedicated refrigerant test loop incorporating various test sections. Plan and conduct experimental campaigns on flow boiling and condensation in different test sections over relevant ranges of mass flux, heat flux, vapour quality, and saturation temperature. Perform data reduction and uncertainty analysis, extracting heat transfer coefficients, pressure drops, and performance metrics. Critically evaluate existing correlations and models for two-phase heat transfer against the experimental data. Contribute to modelling and design tools development. Prepare research publications, conference presentations, and contributions to technical reports for the industrial partner. Participate in regular project meetings with the industrial project and the research group, presenting results and next steps. For a PhD student, there is scope for deeper theoretical and/or modelling contributions (e.g., improved correlations, mechanistic models, VOF‑CFD modelling, high-speed flow visualization, etc.). Qualifications BEng/BASc in Mechanical Engineering (or closely related field) with strong academic performance. For MASc: BEng/BASc required. For PhD: MASc/MSc in Mechanical Engineering or related field preferred. Solid background in thermodynamics, heat transfer, and fluid mechanics; coursework or project experience in boiling/condensation, refrigeration, or heat exchangers is an asset. Demonstrated hands‑on experience in an experimental lab (thermofluids, HVAC, heat transfer, or similar), including use of pumps, piping, and instrumentation. Proficiency in MATLAB (or similar) for data analysis and basic modelling. Strong English technical communication skills (written and oral) and the ability to work effectively in a collaborative team environment. Experience with refrigeration or vapour‑compression systems (e.g., AC/heat pump labs, co‑op in HVAC/R or thermal management). Familiarity with plate or compact heat exchangers, two‑phase flow correlations, and pressure drop models. Experience with data acquisition systems and common sensors (flow, pressure, temperature). Basic proficiency with SolidWorks or similar CAD and 3D printing. Funding & eligibility The position is funded. Stipend level will be competitive and commensurate with department norms for MASc/PhD students. Additional details here. Due to funding and NSERC program requirements, only Canadian citizens or permanent residents of Canada will be considered. How to apply Interested candidates should email a single PDF file containing: A cover letter outlining research interests, relevant experience, and whether you are applying for MASc or PhD. A CV or Resume (including contact information for 2 references). Unofficial transcripts from all post-secondary institutions. Please send applications to: kempers@yorku.ca with subject line: Grad Application – Two‑Phase (MASc/PhD). #J-18808-Ljbffr