You may find the following data useful: • Radius of Mars: 3397 km • Mars surface gravity: 3.8 m/s² • Specific gas constant for Mars' atmosphere: 188.92 J/(kg K) The figure below shows the measured temperature profiles for the Mars atmosphere recorded by the Viking landers. A linear fit (shown in red) has been made to the Viking Lander 1 data, with a single gradient layer from 0 to 40 km, and a single isothermal layer from 40 to 80 km. Note that the Seiff altitudes (z) are geometric altitudes (hG). Fill in the missing values from the table. z, km 120 100 COND. 60 80 60 60 40 T VIKING I VIKING 2 RAD. EQ. MEASURED RAD. EQ. Tand=260°K 20 ADIABAT Tpara о 80 120 160 200 240 80 120 T,°K 160 200 240 Reference: Seiff, A., "Atmospheres of Earth, Mars, and Venus, as Defined by Entry Probe Experiments," Journal of Spacecraft and Rockets, Vol. 28, No. 3, May-June 1991, pp. 265-275. hĠ (km) 0 h (km) T(K) 0 230 p (N/m²) kg/m³) 7.50e2 1.7261e-2 20 19.88 189.77 1.1091e2 3.0936e-3 40 39.53 150 1.0711e1 3.7796e-4 55 54.12 150 1.5142 5.3433e-5

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Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.19P: 5.19 Suppose that the graph below shows measured values of for air in forced convection over a...
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Can you do the calculations to get the values in red in the table?

You may find the following data useful:
• Radius of Mars: 3397 km
• Mars surface gravity: 3.8 m/s²
• Specific gas constant for Mars' atmosphere: 188.92 J/(kg K)
Transcribed Image Text:You may find the following data useful: • Radius of Mars: 3397 km • Mars surface gravity: 3.8 m/s² • Specific gas constant for Mars' atmosphere: 188.92 J/(kg K)
The figure below shows the measured temperature profiles for the Mars atmosphere recorded by the Viking
landers. A linear fit (shown in red) has been made to the Viking Lander 1 data, with a single gradient layer
from 0 to 40 km, and a single isothermal layer from 40 to 80 km. Note that the Seiff altitudes (z) are geometric
altitudes (hG). Fill in the missing values from the table.
z, km
120
100
COND.
60
80
60
60
40
T
VIKING I
VIKING 2
RAD. EQ.
MEASURED
RAD. EQ.
Tand=260°K
20
ADIABAT
Tpara
о
80
120 160 200 240 80 120
T,°K
160 200 240
Reference: Seiff, A., "Atmospheres of Earth, Mars, and Venus, as Defined by Entry Probe Experiments," Journal
of Spacecraft and Rockets, Vol. 28, No. 3, May-June 1991, pp. 265-275.
hĠ (km)
0
h (km)
T(K)
0
230
p (N/m²)
kg/m³)
7.50e2
1.7261e-2
20
19.88
189.77
1.1091e2
3.0936e-3
40
39.53
150
1.0711e1
3.7796e-4
55
54.12
150
1.5142
5.3433e-5
Transcribed Image Text:The figure below shows the measured temperature profiles for the Mars atmosphere recorded by the Viking landers. A linear fit (shown in red) has been made to the Viking Lander 1 data, with a single gradient layer from 0 to 40 km, and a single isothermal layer from 40 to 80 km. Note that the Seiff altitudes (z) are geometric altitudes (hG). Fill in the missing values from the table. z, km 120 100 COND. 60 80 60 60 40 T VIKING I VIKING 2 RAD. EQ. MEASURED RAD. EQ. Tand=260°K 20 ADIABAT Tpara о 80 120 160 200 240 80 120 T,°K 160 200 240 Reference: Seiff, A., "Atmospheres of Earth, Mars, and Venus, as Defined by Entry Probe Experiments," Journal of Spacecraft and Rockets, Vol. 28, No. 3, May-June 1991, pp. 265-275. hĠ (km) 0 h (km) T(K) 0 230 p (N/m²) kg/m³) 7.50e2 1.7261e-2 20 19.88 189.77 1.1091e2 3.0936e-3 40 39.53 150 1.0711e1 3.7796e-4 55 54.12 150 1.5142 5.3433e-5
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