Numerical Analysis of Partial Admission
in Axial Turbines
Narmin Baagherzadeh Hushmandi
Doctoral Thesis 2010
Akademisk avhandling som med tillstånd av Kungliga Tekniska Högskolan framläggs till
offentlig granskning för avläggande av Teknologie Doktorsexamen i Energiteknik,
fredagen den 21 May 2010, kl 10.00 i sal M2, Brinellvägen 64, Kungliga Tekniska
Högskolan, Stockholm. Avhandlingen försvaras på engelska.
ISBN 978-91-7415-390-3 TRITA KRV-2010-02 ISSN 1100/7990
Errata for Doctoral Thesis Report, Narmin B. Hushmandi 2010
Page Paragraph Line Current Statement Correct
14 Last 1 Sector end losses occur at the sides of the blocked channel.
Expansion losses occur at the sides of the blocked channel.
15 1 3 at the other side of the blockage Delete the entire statement 17 1 1 at the exit side of at the leaving side of
17 2 2 of a partial turbine of a partial admission turbine 17 Caption of Fig 2.2 Yahya et al. [1968] Yahya et al. [1969]
19 3 2 between the nozzle between the control stage nozzle 21 1 8 and mass flow of 0.7 kg/s is shown and mass flow of 0.7 kg/s (design mass flow = 7.8 kg/s) is shown 24 2 5 and rotor wheels is studied and rotor blades is studied 24 Table 4‐1 colu mn 2
Gap distance between first stage stator and rotor wheels
Gap distance between first stage stator and rotor blades
29 Last 1 The probe In addition a radial traverse probe was placed at section 2. The probe 31 After last line of page, Eq. (5‐1) is missing : 0.5 , , [and midspan at section 2 is at (192.7 mm) from turbine axis] 32 Table 5‐4 7 0.65 0.26 32 Table 5‐4 8 0.40 0.65 32 Table 5‐4 9 Blank space 0.40 36 1st line after Eq. 5‐ 6 Isentropic enthalpy drop from across the turbine
Isentropic total to static enthalpy drop across the turbine 38 1 6 extension in section (6‐6) extension in section (6‐7) 40 3 3 into the computational grid. into the computational grid when validation tests are performed. 40 3 Add this sentence to the end of paragraph: Time step size was equal to 1/50 of one stator passing period which for design rotational speed equals to 6.4206E‐06 (s). 43 1 5 differences ………… bsolute values. differences are seen in the absolute values. 43 1 9 section (6‐6) that section (6‐7) that 53 2 2 for t ... dmission for the two stage partial admission 53 2 3 on ... urbine on all rotating walls of the turbine 53 3 4 section (6‐6). section (6‐7). 53 Vertical caption of Fig 6‐19 / , / ,
56 1 3 model is used. model is used together with non‐ equilibrium near wall function. 56 2 3 smaller force when smaller tangential force magnitude when 58 2 3 pressure probes placed pressure probes at different runs placed 59 1 3 the admitted channel. the admitted channel in different runs. 63 3 5 plotted in Fig 5. plotted in Fig (7‐2). 74 1 3 and rotor rows. and rotor rows is plotted. 76 1 2 observed in at Fig (7‐15). observed in Fig (7‐15). 76 1 3 considerably lager when considerably larger when 76 1 6 in Figures (7‐18) and (7‐19). in Figures (7‐18) to (7‐21). 79 1 1 Figures (7‐20) and (7‐21) shows Figures (7‐20) and (7‐18) shows
81 2 2 arcs is lower than the single arcs has a different mechanism than the single
82 1 1 Figure (7‐15)showed Figure (7‐1)showed 82 2 5 of Figures (7‐15) and (7‐16). of Figures (7‐1) and (7‐2).
