Physics & Astronomy
heat engines
79%
rural areas
76%
linear alternators
68%
flow separation
59%
electricity
51%
standing waves
46%
traveling waves
45%
heat exchangers
40%
generators
38%
actuators
37%
acoustic streaming
31%
fluid flow
30%
thermal boundary layer
29%
boundary layers
27%
resonators
25%
heat
22%
prototypes
18%
heat transfer
17%
computer programs
16%
shear stress
16%
waste heat
15%
turbogenerators
14%
traveling wave tubes
14%
impedance matching
14%
acoustic impedance
13%
fluids
13%
loudspeakers
13%
interactions
12%
vortex rings
11%
simulation
11%
wavelengths
10%
active control
10%
boundary layer flow
10%
particle image velocimetry
9%
velocity measurement
9%
shear flow
9%
costs
8%
tuning
8%
fabrication
6%
air
6%
wire
6%
energy
6%
vortices
6%
acoustics
6%
Engineering & Materials Science
Heat exchangers
100%
Thermoacoustics
96%
Heat transfer
68%
Heat engines
60%
Hot Temperature
54%
Boundary layers
53%
Fluids
43%
Acoustic streaming
39%
Heat transfer coefficients
31%
Tubes (components)
26%
Nonlinear equations
24%
Engines
21%
Resonators
21%
Geometry
20%
Flow of fluids
20%
Wavelength
20%
Stirling engines
15%
Regenerators
13%
Gases
13%
Pressure measurement
12%
Flow structure
12%
Heat sinks
12%
Energy balance
11%
Energy management
11%
Nusselt number
11%
Temperature control
11%
Cones
10%
Pressure drop
10%
Numerical methods
10%
Acoustics
9%
Earth & Environmental Sciences
manufacturing
37%
cogeneration
29%
waste heat
29%
industrial process
24%
project
24%
boiler
22%
engine
21%
environmental impact of energy
18%
acoustics
18%
land transportation
16%
combined heat and power
16%
combustion engine
15%
energy utilization
14%
research institution
14%
technological change
14%
electrical power
14%
road transport
14%
product development
14%
biomass
13%
industry
13%
structural analysis
12%
new material
12%
program
12%
railway
12%
packaging
12%
fatigue
11%
topology
11%
research program
11%
energy
11%
energy balance
11%
participation
10%
environmental change
9%
protocol
9%
thermodynamics
8%
petroleum
8%
public
7%
policy
6%
cost
5%
gas
5%
product
5%