Chi Ma

ORCID: 0009-0007-2877-3645
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About
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Research Areas
  • Additive Manufacturing Materials and Processes
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Welding Techniques and Residual Stresses
  • Electrohydrodynamics and Fluid Dynamics
  • Electrowetting and Microfluidic Technologies
  • Granular flow and fluidized beds
  • Advanced Machining and Optimization Techniques
  • Mineral Processing and Grinding
  • Fluid Dynamics and Turbulent Flows
  • Combustion and flame dynamics
  • Microfluidic and Bio-sensing Technologies
  • Nanomaterials and Printing Technologies
  • Turbomachinery Performance and Optimization
  • Nuclear Engineering Thermal-Hydraulics
  • Particle Dynamics in Fluid Flows
  • International Business and FDI
  • Additive Manufacturing and 3D Printing Technologies
  • Corruption and Economic Development
  • Cyclone Separators and Fluid Dynamics
  • Hydrocarbon exploration and reservoir analysis
  • Reservoir Engineering and Simulation Methods
  • Aluminum Alloy Microstructure Properties
  • High Entropy Alloys Studies
  • Mercury impact and mitigation studies
  • Corrosion Behavior and Inhibition

China University of Petroleum, East China
2012-2024

Jiangsu University
2022-2023

China Aerodynamics Research and Development Center
2023

Northwestern Polytechnical University
2023

Hunan University
2022

North China Electric Power University
2022

Tsinghua University
2002-2020

Wuhan University
2014

Counter-rotating axial compressor (CRAC) is a promising potential technology to improve the thrust-to-weight ratio of aero-engines, but its special aerodynamic layout usually causes more pronounced flow unsteadiness. Understanding unsteady features and mechanism in CRAC contributes optimization design control strategy organization. A data-driven dynamic mode decomposition method introduced investigate tip unsteadiness CRAC, at point (DP) near-stall (NSP) conditions are revealed. The results...

10.1063/5.0165437 article EN Physics of Fluids 2023-11-01

Confined interface vibration inkjet printing (CIVIJP) in another immiscible liquid phase has been investigated previously as a novel strategy proposed for actively generating ultra-fine droplets, which can be dozens of times smaller than the orifice from they are ejected. However, working frequency this CIVIJP technique is much lower traditional printing, and unique droplet generation mechanism behavior still unapprehended at high frequency. Here, was explored to reveal improve its...

10.1063/5.0075820 article EN Physics of Fluids 2022-03-01

The precise and effective generation of micron-sized droplets is one the most common important issues for droplet-based microfluidics. Active droplet makes use additional energy input in promoting interfacial instabilities generation. Here, we report a new technique active femtoliter microfluidic systems using confined vibration (CIV). CIV formed at orifice traditional inkjet nozzle first by pushing liquid out then pulling it back. Droplets are pinched off during withdrawal process, this...

10.1021/acs.langmuir.0c03368 article EN Langmuir 2021-01-11

Abstract The precise and effective generation manipulation of micron‐sized droplets is crucial for chemical biological research applications. Normally, are achieved by two separate devices/systems with their respective operation strategies. Pipette, inkjet nozzle, microfluidic channels equipped programed syringes commonly used whereas the subsequent normally leveraging forces originating either from optical, electric, magnetic or acoustic field corresponding complicated devices. Here we...

10.1002/nano.202000151 article EN cc-by Nano Select 2020-11-12

Abstract This study presented the results of a laboratory to investigating method improve sweep efficiency by application droplet flow in alkaline flooding heavy oil reservoirs. included micromodel tests, sandpack experiments and 3D physical model study. The glass-etching tests show that injected solution can penetrate into phase create some discontinuous water inside phase, finally forms phenomenon. Depending on high viscosity Jamin effect, tends lower mobility lead improvement efficiency....

10.2118/157814-ms article EN SPE Heavy Oil Conference-Canada 2012-06-12

China began entering the 14th Five-Year Plan period in 2021. With proposed carbon-neutral long-term goal, strategic position of clean energy is becoming increasingly prominent. using biomass power generation one main application ways. In order to study mixed combustion process coal and biomass, this paper takes 300MW lignite boiler as research object uses Fluent software explore influence types location nozzle on combustion, obtains corresponding temperature field, flue gas component field...

10.1051/matecconf/202235502013 article EN cc-by MATEC Web of Conferences 2022-01-01

Wire and arc additive manufacturing (WAAM) is becoming a promising technique due to its high deposition rate low cost. However, WAAM faces challenges of coarse grains. In this study, novel

10.1089/3dp.2021.0053 article EN 3D Printing and Additive Manufacturing 2021-11-30

To improve the aerodynamic characteristics of compressor blades, a novel asymmetric leading edge (ASYLE) has been introduced and shown to offer superior performance. However, robustness such specially designed (LE) remains unclear due considerable uncertainty problems it presents. This paper investigates ASYLE blade under both geometric operational uncertainties. Profile deviations within ±0.05mm were investigate influence manufacturing errors. In addition, perturbated inflow angles between...

10.47176/jafm.17.02.2127 article EN cc-by-nc-nd Journal of Applied Fluid Mechanics 2023-12-05

How do repeated ties influence the international joint venture (IJV) completion? We address this question by considering influences of held foreign and local firms incongruence/congruence between countries. Repeated have been often viewed as an advantage JV partners, which may help complete announced IJV deal same partners. argue that impact on completion depends whether it meets or violates expectations host atmosphere. Specifically, drawing expectancy violations theory, we past fulfilment...

10.5465/ambpp.2020.17970abstract article EN Academy of Management Proceedings 2020-07-29
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