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A three-dimensional numerical model has been developed to investigate the fluid flow and heat transfer behaviors in multilayer deposition of plasma arc welding ( PAW ) based wire and arc additive manufacture ( WAAM ) .
 concept or principle: three-dimensional; concept or principle: model; machanical property: fluid flow; concept or principle: heat transfer; concept or principle: deposition; manufacturing process: plasma arc welding; manufacturing process: PAW; manufacturing process: wire and arc additive manufacture; manufacturing process: WAAM
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 concept or principle: three-dimensional; concept or principle: model; machanical property: fluid flow; concept or principle: heat transfer; concept or principle: deposition; manufacturing process: plasma arc welding; manufacturing process: PAW; manufacturing process: wire and arc additive manufacture; manufacturing process: WAAM