Not quite sure what you mean with "pressure-cooker model", but possibly our experiences with the 1:10:100 method in education and open innovation projects are relevant to your quest.
my2cents
Conference Paper UX in the Wild: on Experience Blend & Embedded Media Design
Conference Paper Interfacing Between Social Media, Business Processes and Use...
Conference Paper Requirements from the Void: Experiences with 1:10:100
A real pressure cooker seals the cooking pot so that the heat causes higher air pressure inside the pot, this allowing higher temperatures for cooking.
As a metaphor, pressure cooker means an environment in which there is significant pressure or stress to achieve goals.
A pressure cooker environment for innovation in education would mean one in which innovation is a high priority and there is considerable "push" or demands that the group develop innovative ideas, practices and tools.