Table 5 Exponential fitting of the rock temperature and fracture aperture.

From: Experimental investigation of the hydraulic and heat-transfer properties of artificially fractured granite

No.

Confining pressure (MPa)

Hydraulic pressure (MPa)

Exponential fitting

R2

#4

8

0.1

y = 204.4796e−0.004x

0.978

8

0.9

y = 216.231e−0.005x

0.989

#5

8

0.1

y = 215.372e−0.005x

0.989

8

0.9

y = 211.787e−0.005x

0.993

#6

8

0.1

y = 204.709e−0.004x

0.993

8

0.9

y = 214.873e−0.005x

0.987

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